RikoteMaster/aqua-rat-mcqa huggingface dataset:
Question: There are 69 people that own pets. 15 people own only dogs, 10 people own only cats, 5 people own only cats and dogs, 3 people own cats, dogs and snakes. How many total snakes are there?
A.2
B.4
C.8
D.39
Answer: D.39
Explanation: lets assign variables to all the areas in Venn Diagram of Three.
three different Units are DOG, Cat, Snake= Total = 69
Only Dog= d=15
Only Cat = c=10
Only Snake = s
Exactly Dog and Cat= 5
Exactly Dog and Snake = x
Exactly Cat and Snake = y
all three= 3
so 69=15+10+5+3+x+y+s
we need to know total snakes= x+y+s+3 = 39
answer:D
Question: A man two flats for $675958 each. On one he gains 16% while on the other he loses 16%. How much does he gain or lose in the whole transaction?
A.2%
B.2.56%
C.3.12%
D.4.65%
Answer: B.2.56%
Explanation: In such a case there is always a loss
Loss% = (16/10)^2 = 64/25 = 2.56%
Answer is B
Question: What is the cost of leveling the field in the form of parallelogram at the rate of Rs.50/10 sq.metre, whose base & perpendicular distance from the other side being 54m & 24m respectively?
A.Rs.5480
B.Rs.6080
C.Rs.6180
D.Rs.6480
Answer: D.Rs.6480
Explanation: Area of the parallelogram = Length of the base * Perpendicular height
= 54 * 24 = 1296 m.
Total cost of levelling = Rs.6480
D
Question: A couple spent $211.20 in total while dining out and paid this amount using a credit card. The $211.20 figure included a 20 percent tip which was paid on top of the price which already included a sales tax of 10 percent on top of the price of the food. What was the actual price of the food before tax and tip?
A.$120
B.$140
C.$150
D.$160
Answer: D.$160
Explanation: Let the price of the meal be x.
After a 10% sales tax addition, the price is 1.1*x
After a 20% tip on this amount, the total is 1.2*1.1*x = 1.32x
1.32x = $211.20
x = $160
The correct answer is D.
Question: There are two inlets and one outlet to a cistern. One of the inlets takes 2 hours to fill up the cistern and the other inlet takes twice as much time to fill up the same cistern. Both of the inlets are turned on at 9:00 AM with the cistern completely empty, and at 10:00AM, the outlet is turned on and it takes 1 more hour to fill the cistern completely. How much time does the outlet working alone takes to empty the cistern when the cistern is full?
A.2 hours
B.2.5 hours
C.3 hours
D.3.5 hours
Answer: A.2 hours
Explanation: The combined inflow rate of the two inlets is 1/2 + 1/4 = 3/4 cistern/hour. Thus, working together, it takes 4/3 hours (time is reciprocal of rate) to fill the cistern.
From 9:00 AM to 10:00 AM, so in 1 hours, the inlet pipes will fill (time)*(rate) = 1*3/4 = 3/4 th of the cistern .
Then the outlet is turned on and the remaining 1/4 th of the cistern is filled in 1 hour.
Letting x to be the rate of the outlet, we would have: 3/4 - x = 1/4 --> x = 1/2 cistern/hour, which means that it takes 2 hours the outlet working alone to empty the cistern.
Answer: A
Question: The 15 homes in a new development are each to be sold for one of three different prices so that the developer receives an average (arithmetic mean) of $200,000 per home. If 4 of the homes are to be sold for $170,000 each and 5 are to be sold for $200,000 each, what will be the selling price of each of the remaining 8 homes?
A.$200,000
B.$210,000
C.$215,000
D.$220,000
Answer: C.$215,000
Explanation: IMO the answer has to be D.
5 houses are being sold for 200,000. 4 houses are being sold for $30,000 less, resulting in a loss of $120,000. To make the average selling price intact i.e. $200,000, the remaining 8 houses must be sold at such a profit that it compensates for the loss of 120,000. Hence 8x=120,000.
x=15,000.
The 8 houses are sold at $15,000 profit or at $215,000. (ANSWER C)
Question: Two trains running in opposite directions cross a man standing on the platform in 27 seconds and 17 seconds respectively and they cross each other in 23 seconds. The ratio of their speeds is?
A.3/7
B.3/2
C.3/1
D.3/9
Answer: B.3/2
Explanation: Let the speeds of the two trains be x m/sec and y m/sec respectively. Then, length of the first train = 27 x meters, and length of the second train = 17 y meters. (27 x + 17 y) / (x + y)
= 23 ==> 27 x + 17 y = 23 x + 23 y
==> 4 x = 6 y
==> x/y
= 3/2.
Answer:B
Question: lexus car agency has 108 cars.he sold some cars at 9% profit and rest at 36% profit thus he gains 17% on the sale of all his cars.the no. of cars sold at 36% profit is?
A.36
B.37
C.38
D.39
Answer: A.36
Explanation: ratio of 36% profit cars to 9% profit cars = 8:19
so no. of cars sold at 36% profit = 108*8/27= 32 cars
ANSWER:A
Question: Find the odd man out.
8, 64, 1, 27, 125, 342, 216
A.1
B.342
C.64
D.125
Answer: B.342
Explanation: Explanation:
Each of the numbers except 342 is a perfect cubes.
Answer: B) 342
Question: How much time will a train of length 200 m moving at a speed of 72 kmph take to cross another train of length 300 m, moving at 36 kmph in the same direction?
A.50
B.77
C.55
D.44
Answer: A.50
Explanation: Answer: Option A
Explanation:
The distance to be covered = Sum of their lengths = 200 + 300 = 500 m.
Relative speed = 72 -36 = 36 kmph = 36 * 5/18 = 10 mps.
Time required = d/s = 500/10
= 50 sec.
Answer: A
Question: The height of a cylinder is 60 Cm and the diameter of its base is 5 Cm. The total surface area of the cylinder is
A.918.14
B.981.41
C.982.14
D.928.41
Answer: C.982.14
Explanation: Given h = 60 Cm and r = 5/2 Cm
Total surface area = 2πrh + 2&pir(power2)
= 2πr(h+r)
= [2 × 22/7 × 5/2 × (60 + 5/2)] Cm(power2)
= [ 44/7 × 5/2 × ( (120 + 5)/2 ) ] Cm(power2)
= 22/7 × 5 × 125/2 Cm(power2)
= (55 × 125)/7 Cm(power2)
= 6875/7 Cm(power2)
= 982.14 Cm(power2)
Answer is C.
Question: It takes twelve minutes to load a certain video on a cellphone, and fifteen seconds to load that same video on a laptop. If the two devices were connected so that they operated in concert at their respective rates, how many seconds would it take them to load the video, rounded to the nearest hundredth?
A.13.32
B.13.87
C.14.25
D.14.69
Answer: D.14.69
Explanation: The laptop can load the video at a rate of 1/15 of the video per second.
The phone can load the video at a rate of 1/(60*12) = 1/720 of the video per second.
The combined rate is 1/15 + 1/720 = 49/720 of the video per second.
The time required to load the video is 720/49 = 14.69 seconds.
The answer is D.
Question: 21 ball numbered 1 to 21. A ballis drawn and then another ball is drawn without replacement.
A.7/21
B.7/23
C.9/42
D.2/21
Answer: C.9/42
Explanation: The probability that first toy shows the even number,
=1021=1021
Since, the toy is not replaced there are now 9 even numbered toys and total 20 toys left.
Hence, probability that second toy shows the even number,
=920=920
Required probability,
=(1021)×(920)=(1021)×(920)
=9/42
C
Question: If 5x=6y=z, what is x+y, in terms of z?
A.z/2
B.2z
C.z/3
D.11z/30
Answer: D.11z/30
Explanation: 5x=6y=z
x = z/5
and y = z/6
x+y = z/5 + z/6 = 11z/30
Answer is D
Question: The arithmatic mean of 2 no is 34 and geomatric mean of two no is 16 then nos will be
A.64,4
B.64,6
C.64,8
D.62,4
Answer: A.64,4
Explanation: A.M of a and b=>(a+b)/2=34=> a+b=68---(1)
G.M of a and b=>sqrt(a,b)=16=> ab=256
(a-b)^2=(a+b)^2-4ab= (68)^2-(4*256)=>4624-1024=> 3600
(a-b)^2=3600=> a-b=60------(2)
Solving (1) and (2), we get
b=4, a=64
ANSWER:A
Question: A man can row 14 Kmph in still water. It takes him twice as long to row up as to row down the river. Find the rate of stream?
A.17.6 Km/hr
B.18.6 Km/hr
C.19.6 Km/hr
D.18.6 m/hr
Answer: B.18.6 Km/hr
Explanation: Explanation:
Let man's rate upstream be x kmph
Then his rate downstream = 2x kmph
Rate in still water = 1/2 (2x + x)
3x/2= 14 Kmph
3x = 28
x = 9.3
Rate of upstream = 9.3 Km/hr
Rate of downstream =18.6 Km/hr
Answer: Option B
Question: In how many ways can the letters F, E, E, L be arranged so that the two E's are not next to each other?
A.5
B.6
C.72
D.96
Answer: B.6
Explanation: 1 F
2 E
1 L
Number of ways these letters can be arranged = 4!/2! (2! to account 2 same Es) = 12
Consider 2 Es as 1 entity and thus the number of arrangements for (EE)FL = 3! = 6
Total allowed cases = 12-6 =6
B is the correct answer.
Question: The vertices of a rectangle in the standard (x,y) coordinate place are (0,0), (0,5), (8,0) and (8,5). If a line through (2,2) partitions the interior of this rectangle into 2 regions that have equal areas, what is the slope of this line?
A.0
B.1/4
C.4/7
D.1
Answer: B.1/4
Explanation: CONCEPT: The readers need to know that a rectangle can be divided into two equal area by a Straight line only when the straight line passes through the Centre of the Rectangle (Intersection of its two diagonals)Draw a figure and know it for yourself.
The point of Intersections of the diagonals will be the midpoint of any diagonal i.e. Midpoint of (0,0), and (8,5) OR Midpoint of (0,5) and (8,0)
i.e. Either [(0+8)/2, (0+5)/2] OR [(0+8)/2, (5+0)/2] =[4, 2.5]
Slope of line passing through points (2,2) and (4,2.5) = (2.5-2)/(4-2) = 0 0.5/2= 1/4
B
Question: A single discount equivalent to the discount series of 20%, 20% and 5% is?
A.31.9
B.39.2
C.31.6
D.31.5
Answer: B.39.2
Explanation: 100*(80/100)*(20/100)*(95/100) = 60.8
100 - 60.8 = 39.2
Answer:B
Question: 45 is the product of two negative numbers. If the greater number is doubled, it is 1 more than the lesser number. What is the greater number?
A.-6
B.-5
C.-8
D.-1
Answer: B.-5
Explanation: Test the options.
(B) - 5
Double of -5 is -10 and 1 less is -9.
-9 * -5 = 45 (Correct)
Correct
Answer (B)
Question: Ten people take a test and the scores are 40, 45, 45, 50, 50, 60, 70, 75, 95, 100.
Find the amount of people that scored between the median and mean scores of the tests.
A.Two
B.Four
C.One
D.Three
Answer: C.One
Explanation: The median = (the average of two middle terms) = (50 + 60)/2 = 55.
The mean = (the sum)/(# of terms) = 630/10 = 63.
Only 60 is between 55 and 63.
Answer: C.
Question: The least number of complete years in which a sum of money put out at 20% compound interest will
be more than doubled is
A.4 years
B.5 years
C.6 years
D.7 years
Answer: A.4 years
Explanation: Explanation:
As per question we need something like following
P(1+R100)n>2P(1+20100)n>2(65)n>265×65×65×65>2
So answer is 4 years
Answer: A
Question: (X+2) is an even number and Y is a positive odd number. Which of the following expressions cannot be even?
A.(X+2)Y
B.(X+2)Y^2
C.(X+2)Y^3
D.Y^4
Answer: D.Y^4
Explanation: Y^4
D
Question: A dishonest milkman sells his milk at cost price but he mixes it with water and thereby gains 25%.
What is the percentage of water in the mixture?
A.25%
B.20%
C.22%
D.24%
Answer: B.20%
Explanation: Explanation :
--------------------------------------------------------------------------------Solution 1 - Using the concepts learned in
Profit and Loss--------------------------------------------------------------------------------If a trader professes to sell
his goods at cost price, but uses false weights, thenGain%=[Error(True Value−Error)×100]%Here Gain=
25%Here error = quantity of water he mixes in the milk = xHere the true value = true quantity of milk =
TSo the formula becomes 25 = x(T−x)×100⇒1=x(T−x)×4⇒T−x=4x⇒T=5xpercentage of water in the
mixture = xT×100=x5x×100=15×100=20%--------------------------------------------------------------------------------
Solution 2 - Using the concepts learned in Mixtures and Alligations---------------------------------------------------
-----------------------------Let CP of 1 litre milk = Rs.1Given that SP of 1 litre mixture = CP of 1 Litre milk =
Rs.1Given than Gain = 25%Hence CP of 1 litre mixture =
100(100+Gain%)×SP=100(100+25)×1=100125=45
By the rule of alligation, we have
CP of 1 litre milk CP of 1 litre water
1 0
CP of 1 litre mixture
4/5
4/5 - 0 = 4/5 1- 4/5 = 1/5
=> Quantity of milk : Quantity of water = 4/5 : 1/5 = 4 : 1
Hence percentage of water in the mixture = 15×100=20%
Answer : Option B
Question: A grocer has a sale of Rs. 5000 Rs. 5500, Rs. 6000, Rs. 6500 and Rs. 7000 for 5 consecutive months. How much sale must he have in the sixth month so that he gets an average sale of Rs. 6125?
A.s. 6500
B.s. 7000
C.s. 7271
D.s. 4997
Answer: C.s. 7271
Explanation: Total sale for 5 months = Rs. (5000 + 5500 + 6000 + 6500 + 7000) = Rs. 30000
Required sale = Rs. [ (6125 x 6) - 30000 ]
= Rs. (36750 - 30000)
= Rs.6750.
C)
Question: A man can row upstream at 26 kmph and downstream at 40 kmph, and then find the speed of the man in still water?
A.22
B.37
C.30
D.33
Answer: D.33
Explanation: US = 26
DS = 40
M = (40 + 26)/2 = 33
Answer:D
Question: Excluding stoppages, the speed of a bus is 54 kmph and including stoppages, it is 45 kmph. For how many minutes does the bus stop per hour?
A.9
B.10
C.12
D.20
Answer: B.10
Explanation: Due to stoppages, it covers 9 km less.
Time taken to cover 9 km =(9* 60)/54min	= 10 min.
Answer:B
Question: 3^2 + 3^2 + 3^2 + 3^2 =
A.3^3
B.3^6
C.4^8
D.4^9
Answer: A.3^3
Explanation: Hi shakticnb,
Certain Quant questions on the GMAT are just about 'organizing' the information in a specific way. If you find yourself getting confused by a prompt, think about how you might change the way that the information is presented to you.
Here, for example, we're asked for....
3^2 + 3^2 + 3^2 + 3^2 =
Now, the GMAT doesn't really expect us to calculate this sum (but we could if we had to), but we are expected to find a way to organize this information... If, instead of all of those exponents, we had...
X + X + X + X =
What would the sum be?
Clearly, it would be 4(X) = 4X.....since we're just combining 'like' terms. Take that same idea with this prompt and you have...
3^2 + 3^2 + 3^2 + 3^2 =
3(3^2)
This can be re-written as...
(3^1)(3^2)
...and now we can use exponent rules; since we're MULTIPLYING 'bases' that are the same, we ADD the exponents...
(3^1)(3^2) = 3^3
Final Answer:
A
Question: A set of numbers has the property that for any number t in the set,t+2 is in the set. If -3 is in the set, which of the following must also be in the set? I. 4 II. 6 III. 3
A.III only
B.II only
C.I only
D.I,III only
Answer: A.III only
Explanation: question is asking for must be there elements.
According to the question if t is there t+2 must be there.
if -3 is the starting element the sequence is as follows.
S ={-3,-1,1,3,5....}
if -3 is not the starting element the sequence is as follows
S = {...-5,-3,-1,1,3,5...}
By observing the above two sequences we can say that 3 must be there in set S.
Answer : A
Question: From a pack of 52 cards, one card is drawn at random. Find the probability that the drawn card is a club or a jack?
A.17/52
B.8/13
C.4/13
D.1/13
Answer: C.4/13
Explanation: EXPLANATION:
n(S) = 52
n(E) = 16
P(E) = n(E) / n(S) = 16/ 52
= 4/13
ANSWER IS C
Question: A and B together can do a piece of work in 8 days. If A alone can do the same work in 12 days, then B alone can do the same work in?
A.15
B.20
C.24
D.30
Answer: C.24
Explanation: B = 1/8 â€“ 1/2 = 1/24 => 24 days
ANSWER C
Question: Point X is located on line segment AB and point Y is located on line segment CD. If AB = CD and AX < CY, then
A.XB < YD
B.XB < YD
C.AX > XB
D.AX < CD
Answer: D.AX < CD
Explanation: A------X--B
C--Y------D
AX < CD.
Answer: D.
Question: Shopkeeper rise price by 35% and gives successive discount of 10% and 15%. What is overall % gain or loss?
A.5.275%
B.4.275%
C.3.275%
D.6.275%
Answer: C.3.275%
Explanation: Let d initial price be 100
35 % rise
now price = 135/100*100 = 135
10% discount
Then price = 135 * 90/100 = 121.5
15 % discount
Then price = 121.5 * 85/100 = 103.275
So Gain = 103.275 - 100 = 3.275
Gain % = Gain * 100 /CP
==> 3.275 * 100 /100 = 3.275%
ANSWER:C
Question: A shopkeeper labeled the price of his articles so as to earn a profit of 50% on the cost price. He then sold the articles by offering a discount of 10% on the labeled price. What is the actual percent profit earned in the deal?
A.35%
B.20%
C.17%
D.18%
Answer: A.35%
Explanation: Explanation:
Let the CP of the article = Rs.100.
Then labeled price = Rs.150.
SP = Rs.150- 10% of 150 = Rs.150-15 = Rs.135.
Gain = Rs.135 â€“ Rs.100 = Rs.35
Therefore, gain/profit percent = 35%.
Answer: Option A
Question: A man swims downstream 30 km and upstream 18 km taking 3 hours each time, what is the speed of the man in still water?
A.7 kmph
B.8 kmph
C.5 kmph
D.9 kmph
Answer: B.8 kmph
Explanation: 30 --- 3 DS = 10
? ---- 1
18 ---- 3 US = 6
? ---- 1 M = ?
M = (10 + 6)/2 = 8
Answer: B
Question: A man is walking at the rate of 7 km/hr crosses a bridge in 15 minutes. The length of the bridge is
A.1000 meters
B.1050 meters
C.1200 meters
D.1750 meters
Answer: D.1750 meters
Explanation: Explanation:
We need to get the answer in meters. So we will first of change distance from km/hour to meter/sec by multiplying it with 5/18 and also change 15 minutes to seconds by multiplying it with 60.
Speed=7âˆ—5/18=35/18m/sec
Time=15âˆ—60seconds=900seconds
Distance=Timeâˆ—Speed/Distance=35/18âˆ—900=1750meter
Option D
Question: For the past n days, the average (arithmetic mean) daily production at a company was 40 units. If today's production of 90 units raises the average to 45 units per day, what is the value of n ?
A.30
B.18
C.10
D.9
Answer: D.9
Explanation: (average production for n days) * n = (total production for n days) --> 40n=(total production for n days);
(total production for n days) + 90 = (average production for n+1 days) * (n+1) --> 40n + 90 = 45 * (n+1) --> n=9
Answer: D.
Question: Ayesha’s father was 38 years of age when she was born while her mother was 33 years old when her brother four years younger to her was born. What is the difference between the ages of her parents?
A.2 years
B.9 years
C.6 years
D.8 years
Answer: B.9 years
Explanation: EXPLANATION
Mother’s age when Ayesha’s brother was born = 33 years.
Father’s age when Ayesha’s brother was born = (38 + 4) years = 42 years.
Required difference = (42 – 33) years = 9 years.
Answer B
Question: There was a person who smoked a lot .One day he decided to quit his habbit,but he had 27 cigarettes with him.So he started smoking them one by one ,to finish them. He had the habit of smoking only 2/3rd of it and leaving the rest butt. Latter he found out that by joining 3 butts he can form 1 cigarette. So ,tell how many cigarettes in all he smoked.
A.30
B.40
C.50
D.60
Answer: B.40
Explanation: 27+9+3+1=40.
ANSWER:B
Question: Richard walks along Sunrise Boulevard daily. He starts walking at 07:00 from block 10 and walks to block 90 where he turns around and walks back to block 70, where he stops at 07:30. The blocks along the boulevard are numbered sequentially (1,2,3), and each block measures 40 meters. What is Richard's speed in meters per minute?
A.75
B.180
C.198
D.216
Answer: A.75
Explanation: Total distance from 10 to 90 =80 + from 90 to 70 =20
So the dist is 100×30(per block dist)
Speed = 3000mts/40min =75m/min
A is the answer
Question: A man swims downstream 72 km and upstream 45 km taking 9 hours each time; what is the speed of the current?
A.1.9
B.1.5
C.1.2
D.1.6
Answer: B.1.5
Explanation: 72 --- 9 DS = 8
? ---- 1
45 ---- 9 US = 5
? ---- 1 S = ?
S = (8 - 5)/2 = 1.5
Answer:B
Question: Uncle Bruce is baking chocolate chip cookies. He has 36 ounces of dough (with no chocolate) and 12 ounces of chocolate. How many ounces of chocolate are left over if he uses all the dough but only wants the cookies to consist of 20% chocolate?
A. 3
B. 6
C. 7.2
D. 7.8
Answer: A. 3
Explanation: Answer is A.
x/x+36=1/5
x=9
12-9=3
Question: A is thrice as good a workman as B and takes 10 days less to do a piece of work than B takes. B alone
can do the whole work in
A.15 days
B.10 days
C.9 days
D.8 days
Answer: A.15 days
Explanation: Explanation:
Ratio of times taken by A and B = 1:3
Means B will take 3 times which A will do in 1 Ɵme
If difference of time is 2 days, B takes 3 days
If difference of time is 10 days, B takes (3/2) * 10 =15 days
Answer: A
Question: There are 7 non-collinear points. How many triangles can be drawn by joining these points?
A.35
B.10
C.8
D.7
Answer: A.35
Explanation: Solution:
A triangle is formed by joining any three non-collinear points in pairs.
There are 7 non-collinear points.
The number of triangles formed,
= 7C3
= [{7 *(7−1) *(7−2)} /3! ]
=(7 *6 *5)/(3 *2 *1) = 7 *5 = 35.
Answer: Option A
Question: Nine fencers participate in a fencing championship. Assuming all competitors have an equal chance of winning, how many possibilities are there with respect to how a first-place and second-place medal can be awarded?
A.72
B.75
C.81
D.84
Answer: A.72
Explanation: 9*8 = 72
The answer is A.
Question: In a kilometer race, A beats B by 48 meters or 6 seconds. What time does A take to complete the race?
A.22
B.119
C.110
D.109
Answer: B.119
Explanation: Time taken by B run 1000 meters = (1000 * 6)/48 = 125 sec.
Time taken by A = 125 - 6 = 119 sec.Answer:B
Question: Two trains of equal lengths are running at speeds of 30 kmph and 60 kmph. The two trains crossed each other in 30 seconds when travelling in opposite direction. In what time will they cross each other when travelling in the same direction?
A.90 sec
B.87 sec
C.67 sec
D.28 sec
Answer: A.90 sec
Explanation: Let the length of each train be x m.
(x + x) / (60 + 30)5/18
= (750 * 18) / (30 * 5)
= 90 sec
Answer:A
Question: The radius of a wheel is 12.6 cm. What is the distance covered by the wheel in making 200 resolutions?
A.158.210 m
B.704 m
C.153.256 m
D.158.256 m
Answer: D.158.256 m
Explanation: In one resolution, the distance covered by the wheel is its own circumference. Distance covered in 200 resolutions.
= 200* 2 * 22/7 * 12.6 = 15825.6 cm
= 158.256 m
Answer:D
Question: Avinash covers a distance of 8km in 50 minutes. If he covers 3km distance in 2/5th of time then, What speed should he maintain to cover the remaining distance in the remaining time?
A.10
B.12
C.15
D.20
Answer: C.15
Explanation: Total distance = 8 Km
Total time = 50 Km
Time taken to cover the distance of 3 Km = 50*2/5 = 20 min = 1/3 hours
Remaining distance = 8 - 3 = 5 Km
Required speed = 5/1/3 = 15 Kmph
Answer: Option 'C'
Question: A retailer purchases shirts from a wholesaler and then sells the shirts in her store at a retail price that is 80 percent greater than the wholesale price. If the retailer decreases the retail price by 20 percent this will have the same effect as increasing the wholesale price by what percent?
A.26
B.37.5
C.42
D.44
Answer: D.44
Explanation: Answer: D= 44.
Assume Rs. 100 to be the price at which the retailer buys from wholesaler.
80% increase makes Retail price = 180.
Now 20% decrease -> (1-20/100) * 180 = 144.
Now compared to the wholesale price of 100, 44% increase is what will have the same effect as increasing the wholesale price.
Question: The average age of husband, wife and their child 3 years ago was 27 years and that of wife and the
child 5 years ago was 20 years. The present age of the husband is
A.40
B.35
C.45
D.55
Answer: A.40
Explanation: Explanation:
Sum of the present ages of husband, wife and child = (27 * 3 + 3 * 3) years = 90 years.
Sum of the present ages of wife and child = (20 * 2 + 5 * 2) years = 50 years.
Husband's present age = (90 - 50) years = 40 years
Answer: Option A
Question: Average between two sets of numbers is closer to the set withmore numbers?
A.70
B.80
C.90
D.92
Answer: B.80
Explanation: If on a test three people answered 90% of the questions correctly and two people answered 80% correctly, then the average for the group is not 85% but rather 3×90+2×805=4305=86.3×90+2×805=4305=86.
Here, 90 has a weight of 3 => it occurs 3 times.
Whereas 80 has a weight of 2 => it occurs 2 times.
So the average is closer to 90 than to 80 as we have just calculated.
B
Question: The length of the bridge, which a train 130 m long and traveling at 45 km/hr can cross in 30 sec is?
A.220
B.230
C.245
D.355
Answer: C.245
Explanation: Speed = 45 * 5/18 = 25/2 m/sec.
Time = 30 sec
Let the length of bridge be x meters.
Then, (130 + x)/30 = 25/2
x = 245 m.
Answer: Option C
Question: Find the sum The difference between the compound and S.I. on a certain sum of money for 5 years at 20% per annum is Rs.75 of money?
A.1489
B.6845
C.2598
D.1875
Answer: D.1875
Explanation: P = 75(100/20)5 => P = 1875
Answer: D
Question: The sale price sarees listed for Rs.200 after successive discount is 20% and 10% is?
A.187
B.124
C.172
D.144
Answer: D.144
Explanation: 200*(80/100)*(90/100)
= 144
Answer:D