MU-NLPC/Calc-aqua_rat huggingface dataset:
(X)+1789+9011-7819=90510. Calculate the value of X	Choose the correct choice
A) 87501	B) 87599	C) 87529	D) 87520	E) 87521

Solution: x+1789+9011-7819=90510   =x+1789+9011=90510+7819   =x+10800=98329   =x=98329-10800= 
98329-10800 = 87_529
87529   Answer is 87529
Answer: C
If r is an even integer and q is an odd integer, which of the following must be an odd integer?	Select:
A) r/q	B) rq	C) 2r+q	D) 2(r+q)	E) 3r/q

Solution: this is a must question:   A. r/q   can be a non-integer   B.rq   always even   C. 2r+q   2r = even -> even+odd = odd   D. 2(r+q)   always even - r+q = odd *2 -> even   E. 3r/q   might be a non integer.   2r+q
Answer: C
A train 240 m long passed a pole in 24 sec. How long will it take to pass a platform 630 m long?  Options.
A) 22  B) 89  C) 277  D) 278  E) 87

Solution: Speed = 240/24= 
240/24 = 10
10 m/sec.   Required time= (240 + 630)/10= 
(240 + 630)/10 = 87
87 sec.   Answer: 87
Answer: E
A business executive and his client are charging their dinner tab on the executive's expense account.The company will only allow them to spend a total of 50$ for the meal.Assuming that they will pay 10% in sales tax for the meal and leave a 15% tip,what is the most their food can cost?
Choose the correct answer.
A) 39.52$  B) 40.63$  C) 41.63$  D) 42.15$  E) 41.15$

Solution: let x is the cost of the food   1.07x is the gross bill after including sales tax   1.15* 1.10x=50   x=39.52   Hence, the correct option is 39.52$
Answer: A
Meg and Bob are among the 5 participants in a cycling race. If each participant finishes the race and no two participants finish at the same time, in how many different possible orders can the participants finish the race so that Meg finishes ahead of Bob?  Choose the correct choice from the following answers
A) 24
B) 30
C) 60
D) 90
E) 120

Solution: Let me redeem myself:   JXXXX => Bob can be in any X...Total 4! = 24   XJXXX => Bob can be in the last 3 Xs...Total 3! = 6. However, since the first person can change too and it cannot be Bob, it can only be 3 other people. So Total = 6*3= 
6*3 = 18
18   XXJBX=> 3! = 6 total   XXJXB => 3! = 6 total   So this yields total of 12   XXXJB => 3! = 6   Ans = 24+18+12+6= 
24+18+12+6 = 60
60   answer is 60
Answer: C
In a cricket team, the average of eleven players is 28 years. Out of these, the average ages of three groups of three players each are 31 years, 28 years and 30 years respectively. If in these groups, the captain and the youngest player are not included, and the captain is eleven years older than the youngest player, what is the age of the captain ?	Pick one:
A) 33 years B) 34 years C) 35 years D) 26 years E) 37 years

Solution: Explanation :   Let the age of youngest player be x.   Then, age of the captain = (x + 11).   => 3*31 + 3*28 + 3*30 + x + x + 11= 
+ 11 = 11
11*28.=> 93+84+90+2x+11=308   so 2x = 30   so x = 15.   Age of the captain = (x+11)   = 26 years.   Answer : 26 years
Answer: D
which of the following inequalities indicates the set of all values of d for which the lengths W of the three sides of a triangle can be 3,4, and d?  Choose the correct choice from the following answers
A) 0<d<1 B) 0<d<5 C) 0<d<7 D) 1<d<5 E) 1<d<7

Solution: This question is a good way to apply one of the most basic relation between the 3 sides of a triangle. In a triangle (ANY TRIANGLE), any side MUST be greater than the positive difference of the other two sides and less than than the sum of the other 2 sides. Let the sides of a triangle be a,b,c .   Thus,   |a-b| < c < a+b   |b-c| < a < b+c   |c-a| < b < a+c   Thus, if the sides of the triangle are 3,4 and d,   4-3<d<4+3 ---=""> 1<d<7. Thus 1<d<7 is the correct answer.</d<4+3>
Answer: E
At what rate percent on simple interest will Rs.750 amount to Rs.1050 in 5 years?  Choices:	A) 8	B) 3	C) 4	D) 5	E) 6

Solution: 300 = (750*5*R)/100   R = 8%.8nswer: 8
Answer: A
A father said to his son, "I was as old as you are at the present at the time of your birth". If the father's age is 50 years now, the son's age five years back was:	Select:
A) 15 years.
B) 20 years.
C) 25 years.
D) 30 years.
E) 35 years.

Solution: Let the son's present age be x years. Then, (50 - x) = x   2x = 50.   x = 25.   Son's age 5 years back (25 - 5)= 
(25 - 5) = 20
20 years.   Answer: Option 20 years.
Answer: B
There are 5 sweets – Jumun, Kulfi, Peda, Laddu and Jilabi that I wish to eat on 5 consecutive days – Monday through Friday, one sweet a day, based on the following self imposed constraints:
1) Laddu is not eaten on Monday
2) If Jamun is eaten on Monday, then Laddu must be eaten on Friday
3) If Laddu is eaten on Tuesday, Kulfi should be eaten on Monday
4) Peda is eaten the day following the day of eating Jilabi
Based on the above, peda can be eaten on any day except?  Pick.
A) Tuesday
B) Monday
C) Wednesday
D) Friday
E) Sunday

Solution: Peda is eaten the day following the day of eating Jilabi, So Peda can never be had on the starting day, which is Monday.   ANSWER:Monday
Answer: B
A sum of money is to be distributed among A, B, C, D in the proportion of 6 : 3 : 5 : 4. If C gets Rs. 1000 more than D, what is B's share? Choose the correct choice:
A) 1500
B) 2000
C) 2500
D) 2800
E) 3000

Solution: Let the shares of A, B, C and D be Rs. 5x, Rs. 3x, Rs. 5x and Rs. 4x respectively.   Then, 5x - 4x = 1000   x = 1000.   B's share = Rs. 3x = Rs. (3 x 1000) = Rs. 3000.   ANSW3000R :3000
Answer: E
Mary jogs 9 km at a speed of 6kmph. at what speed would she need to jog during the next 1.5 hour to have an average of 9 km per hr at the entire jogging session? Choose the correct choice from the following choices
A) 12kmph	B) 7kmph	C) 87kmph	D) 74kmph	E) 78kmph

Solution: let speed of the jogging be x kmph   total time taken=(9/6+1.5)= 
(9/6+1.5) = 3
3 hrs   total distance covered=(9+1.5x)   9+1.5 x/3=9   9+1.5 x=27   3/2x=18   x=18*2/3= 
18*2/3 = 12
12 kmph   12kmphnswer(12kmph)
Answer: A
The average (arithmetic mean) of y numbers is x. If 15 is added to the set of numbers, then the average will be x - 5. What is the value of y in terms of x ?	Choose the correct choice from the following options:
A) x/6 - 6
B) x/6 - 5
C) x/7 - 5
D) x/5 - 4
E) x/5 - 6

Solution: (A1 + A2 + .. + Ay)/y = x   (A1 + A2 + .. + Ay + 15)/(y+1) = x - 5   => (xy + 15)/(y+1) = x - 5   => xy + 15 = yx -5y + x - 5   => 20 = x - 5y   => 5y = x - 20   => y = x/5 - 4   Answer - x/5 - 4
Answer: D
A sequence of numbers is such that a1 = 11, a2 =16, and each subsequent an = an-2 + 9. Which of the following numbers is a member of the sequence?
Choose the correct choice from the following options.
A) 216  B) 246  C) 289  D) 299  E) 368

Solution: each odd term(1st , 3rd, 5th,...) of the sequence is given by 11 + 9*(something)   each even term(2nd, 4th, 6th...) of the sequence is given by 16 + 9*(something)   So if you subtract the numbers by 11 or 16 then it should be divisible by 9   216-11(=205) or 216-16(=200) are not divisible by 9   246-11(=235) or 246-16(= 240) are not divisible by 9   289-11(=278) or 289-16(=273) are not divisible by 9   299-11(=288) is divisible by 9ANSWER, 299-16(=283) are not divisible by 9   368-11(=357) or 368-16(=352) are not divisible by 9   So, Answer is 299
Answer: D
Every year an amount increases by 1/8th of itself. How much will it be after two years if its present value is Rs.64000?	Choose the correct choice from the following answers:
A) 81000  B) 81027  C) 81089  D) 81027  E) 28939

Solution: 64000* 9/8 * 9/8= 
64000* 9/8 * 9/8 = 81_000
81000   81000nswer: 81000
Answer: A
A train 280 m long, running with a speed of 63 km/hr will pass a tree in?	Select
A) 11
B) 16
C) 188
D) 199
E) 12

Solution: Speed = 63 * 5/18 = 35/2 m/sec   Time taken = 280 * 2/35= 
280 * 2/35 = 16
16 sec   Answer: 16
Answer: B
A train 125 m long passes a man, running at 5 km/hr in the same direction in which the train is going, in 10 sec. The speed of the train is?
Choose the correct choice from the following options.
A) 28 B) 50 C) 99 D) 121 E) 81

Solution: Speed of the train relative to man = 125/10 = 25/2 m/sec.   = 25/2 * 18/5= 
25/2 * 18/5 = 45
45 km/hr   Let the speed of the train be x km/hr. Then, relative speed= (x - 5) km/hr.   x - 5 = 45 => x = 50 km/hr.   Answer: 50
Answer: B
B @ K I 9 D Â© 5 2 T $ M 4 E J # U R 1 A Î´ K 5 W 6 % F Q 7 H P 8 Z How many such consonants are there in the above arrangement, each of which is immediately preceded by number and immediately followed by a symbol? Pick one.
A) None	B) One	C) Two	D) Three	E) More than three

Solution: Explanation:   Number Twoonsonant Symbol   Such combinations are:   9 D Â© : 2 T $   ANSWER IS Two
Answer: C
A bat is bought for Rs.400 and sold at a gain of 25% find its selling price?	Pick one.
A) s.460/-	B) s.480/-	C) s.500/-	D) s.520/-	E) s.540/-

Solution: 100 % ------> 400 (100 * 4 = 400)   120 % ------> 500 (125 * 4 = 500)   Selling price = Rs.500/-   Option 's.500/-'
Answer: C
The average age of father and his two sons is 27 Years. Five years ago, the average age of the two sons was 12 Years. If the difference between the ages of the two sons is four years, what is the present age of the father? Choose the correct choice from the following choices:
A) 45	B) 46	C) 47	D) 48	E) 49

Solution: The total present age of father and two sons is 3S27 = 81 yrs   The total present age of sons is (12+5) X 2 = 34Years   so, present age of father is 81 – 34 = 47 yrs   Answer 47
Answer: C
The sector of a circle has radius of 21 cm and central angle 150o. Find its perimeter?  Pick
A) 91.5	B) 91.4	C) 97	D) 91.3	E) 91.1

Solution: Perimeter of the sector = length of the arc + 2(radius)   = (150/360 * 2 * 22/7 * 21) + 2(21)   = 55 + 42= 
55 + 42 = 97
97 cm   Answer:97
Answer: C
The no. of gift pack bought by Dexter is 1 more than the price, in rupees, of each gift pack. The amount of Rs.380 which Dexter had, fell short of the required amount. What is theamount by which he might have fallen short.  Pick one
A) 20 B) 40 rs C) 50 D) 60 E) 90

Solution: Let the price of gift pack be 'aa'   Then number of packs bought =a+1=a+1   Hence total cost is a(a+1)a(a+1)   It is given that 380<a(a+1)380<a(a+1)   If a=19a=19, the total cost =19×20=380=19×20=380   Dexter would not have fallen short, If:   a=20a=20, a(a+1)=420a(a+1)=420   So he would have fallen short by Rs 40.   This is the minimum amount by which he may have fallen short.   40 rs
Answer: B
A man bought a horse and a carriage for Rs. 3000. He sold the horse at a gain of 20% and the carriage at a loss of 10%, thereby gaining 2% on the whole. Find the cost of the horse.	Choose the correct choice
A) 2200	B) 1800	C) 1200	D) 1000	E) 1500

Solution: Let the C.P of the horse be Rs. X, Then, C.P of the carriage = Rs.(3000- x).   20% of x - 10% of ( 3000-x ) =2% of 3000 = 60,   x/5 - ( 3000-x )/10 = 60, 3x - 3000 = 600, 3x =3600, x = 1200.   Hence, C.P of the horse = Rs. 1200   ANSWER:1200
Answer: C
A is twice as good a workman as B and they took 10 days together to do the work B alone can do it in.
Options:
A) 17 days
B) 12 days
C) 30 days
D) 25 days
E) 27 days

Solution: W30 days = 2:1   2x + x = 1/10   x = 1/30 => 30 days   ANSWER:30 days
Answer: C
Amit, Raju and Ram agree to pay their total electricity bill in the proportion 3 : 4 : 5. Amit pays first day's bill of Rs. 50, Raju pays second day's bill of Rs. 55 and Ram pays third day's bill of Rs. 75. How much amount should Amit pay to settle the accounts?
Choose the most appropriate option:
A) Rs. 15.25	B) Rs. 17	C) Rs. 12	D) Rs. 5	E) NONE OF THE ABOVE

Solution: EXPLANATION:   Total bill paid by Amit, Raju and Ram = ( 50 + 55 +75 ) = Rs. 180   Let amount paid by Amit, Raju and Ram be Rs. 3x, 4x and 5x respectively.   Therefore, (3x + 4x + 5x ) = 180   12x = 180   x = 15   Therefore, amount paid by,   Amit = Rs. 45   Raju = Rs. 60   Ram = Rs. 75   But actually as given in the question, Amit pays Rs. 50, Raju pays Rs. 55 and Ram pays Rs. 80. Hence, Amit pays Rs. 5 less than the actual amount to be paid. Hence he needs to pay Rs. 5 to Raju settle the amount.   ANSWER IS Rs. 5
Answer: D
The average weight of a class of 24 students is 35 kg. If the weight of the teacher be included, the average rises by 400 g. The weight of the teacher is Answers
A) 45 kg B) 55 kg C) 75 kg D) 15 kg E) 35 kg

Solution: Weight of the teacher = (35.4 x 25 - 35 x 24) kg   = 45 kg.   45 kgnswer: 45 kg
Answer: A
In covering a distance of 90 km, A takes 2 hours more than B. If A doubles his speed, then he would take 1 hour less than B. A's speed is: Options:
A) 5 km/h
B) 8 km/h
C) 10 km/h
D) 15 km/h
E) 20 km/h

Solution: Let A's speed be X km/hr.   Then, 90/x - 90/2x = 3   45/x = 3   x = 15 km/hr.   Answer : 15 km/h
Answer: D
Find the total number of prime factors in the expression (4)^11 x (7)^3 x (11)^2
Choose the correct choice from the following choices:
A) 26  B) 22  C) 25  D) 27  E) 29

Solution: (4)^11x (7)^3 x (11)^2   = (2 x 2)^11 x (7)^3 x (11)^2   = 2^11 x 2^11 x7^3x 11^2   = 2^22 x 7^3 x11^2   Total number of prime factors = (22 +3+ 2)= 
(22 +3+ 2) = 27
27.   Answer is 27.
Answer: D
The price of precious stone is directly proportional to square of its weight. what will be the loss incurred if a stone weighing 28gm and costing 28,000 breaks into two pieces whose weights are in the ratio 15:13?  Choose the correct choice from the following options
A) 13958.58  B) 13928.58  C) 14000  D) 13562.42  E) None of these

Solution: Explanation :   Let price = p,weight = w.   p=k w^2 ---------eq(1) [here k is a constant taken]   As it is given dat price is directly proportional to weight   given w = 28,p = 28000   So from eq(1),k=1000/28   Now the broken pieces are 15gm nd 13gm   13928.58y putting the values of w and k in eq(1) we get   p1=8035.71(for w=15)   p2=6035.71(for w=13)   Total cost for broken pieces = (8035.71+6035.71)= 
(8035.71+6035.71) = 14_071.42
14071.42   So the loss=(28000-14071.42)= 
(28000-14071.42) = 13_928.58
13928.58   Answer : 13928.58
Answer: B
If taxi fares were $1.00 for the first 1/5 mile and $0.30 for each 1/5 mile there after, then the taxi fare for a 3-mile ride was Choose the correct choice from the following
A) $1.56  B) $2.40  C) $3.80  D) $5.20  E) $2.80

Solution: In 3 miles , initial 1/5 mile charge is $1   rest of the distance = 3 - (1/5) = 14/5   rest of the distance charge = 14(0.3) = $4.2 (as the charge is 0.3 for every 1/5 mile)   => total charge for 3 miles = 1+4.2= 
1+4.2 = 5.2
5.2   Answer is $5.20.
Answer: D
The average expenditure of a labourer for 5 months was 85 and he fell into debt. In the next 4 months by reducing his monthly expenses to 60 he not only cleared off his debt but also saved 30. His monthly income is  Choose the correct choice from the following
A) 69.5
B) 71.2
C) 60.4
D) 62.1
E) 72.1

Solution: Income of 6 months = (5 × 85) – debt   = 425 – debt   Income of the man for next 4 months   = 4 × 60 + debt + 30   = 270 + debt   ∴ Income of 10 months = 695   69.5verage monthly income = 695 ÷ 10 = 69.5   69.5nswer 69.5
Answer: A
Tom divided $360 among his six children for them to use for Christmas gifts. His daughter Kate
added $20 to her portion, then used the money to buy 16 gifts that each cost the same amount.
What was the price of each of Kate’s gifts?  Choose the correct choice from the following choices
A) $5  B) $10  C) $15  D) $20  E) $25

Solution: $360 ÷ 6 = $60 for each child   $60 + $20 = $80 Kate’s money   $80 ÷ 16  60 +  20= 
 60 +  20 = 80
$80 Kate’s money   $80 ÷ 16= $5 cost of each gift   correct answer $5
Answer: A
A pack of baseball cards consists of 12 outfielder cards and 8 infielder cards. What is the lowest number of outfielder cards that would have to be removed from the pack so that no more than 30 percent of the pack would be outfielder cards?  Pick one.
A) 4	B) 5	C) 6	D) 7	E) 8

Solution: let the number of O card to be removed=X   then remaning cards=12-X   now this 12-X cards should count less than 30% of toatal Ocards   12-X<.3*12   X<12-3.6   X<8.4   X=8   Ans 8
Answer: E
A, B and C shared the profit in a business in the ratio 5 : 7 : 8. They had partnered for 14 months, 2 months and 7 months respectively. What was the ratio of their investments?  Choose the most appropriate option:
A) 10:12:14  B) 12:24:28  C) 20:22:12  D) 5:49:16  E) None of these

Solution: Explanation :   Ratio in which A,B and C shared the profit = 5 : 7 : 8   Assume that the ratio of their investment = a:b:c   Then 14a : 2b : 7c = 5 : 7 : 8   Good to go, we got the equation. Now it's a matter of time to find a, b and c   14a/2b = 5/7   => 98a = 10b   => b = 98a/10 = 49a/5 ---(1)   14a/7c =5/8   => 2a/c =5/8   => 16a = 5c   => c = 16a/5 ---(2)   a : b : c = a : 49a/5 : 16a/5 = 1 : 49/20 : 16/5 = 5 : 49 : 16. Answer : Option 5:49:16
Answer: D
If a point (x,y) is randomly selected within the square shown in the figure above, (the vertices are on 1,1 1,-1, -1,1 -1,-1) what are
the R odds that x^2+y^2>1? Choose one.
A) 1. pi/4	B) 2. R=pi/16	C) 3. R=1-pi/4	D) 4. 1-pi/16	E) 5.4-pi

Solution: area of the square will be 4, and the area of circle with center (0,0) and radius 1 will be pi.   then succesful outcomes = 4 - pi (the area where x2+y2 will be greater than 1)   total outcomes = 4   therefore probability = (4-pi)/4   3. R=1-pi/4
Answer: C
Sandy walked 20 meters towards south. Then Sandy turned to her left and walked 25 meters. She then turned to her left and walked 20 meters. She then turned to her right and walked 30 meters. What distance is she from the starting point and in which direction?  Options.
A) 35 m East B) 35 m North C) 30 m West D) 45 m West E) 55 m East

Solution: The net distance is 25 + 30= 
25 + 30 = 55
55 meters to the east.   The answer is 55 m East.
Answer: E
In an examination 35% of the students passed and 546 failed. How many students appeared for the examination? Choose the correct choice from the following:	A) A)540	B) B)400	C) C)700	D) D)650	E) E)840

Solution: Let the number of students appeared be x   then, 65% of x = 546   65x/100 = 546   x = 546*100/65= 
546*100/65 = 840
840   Answer is 840
Answer: E
X divided by Y equals 7.28 what is a possible remainder?  Choose the correct choice:  A) 20  B) 21  C) 5  D) 6  E) 9

Solution: With the decimal being 28/100, the simplest form is 7/25. If the divisor is a multiple of 25, the remainder must be a multiple of 7. The only number that is so is 21. Answer 21.
Answer: B
Annika hikes at a constant rate of 12 minutes per kilometer. She has hiked 2.75 kilometers east from the start of a hiking trail when she realizes that she has to be back at the start of the trail in 51 minutes. If Annika continues east, then turns around and retraces her path to reach the start of the trail in exactly 51 minutes, for how many kilometers total did she hike east?  Choose the correct option:	A) 3.625	B) 3	C) 4.5	D) 4	E) 3.5

Solution: Set up two R x T =D cases.   1. 1/12 km/ min x T = 2.75   from which T= 33 mins.   We know total journey time now is  51 +33= 
 51 +33 = 84
84.   The rate is the same ie 1/12km/min.   set up second R x T=D case.   1/12 km/min x 84 = 7 km   Now the total journey would be halved as distance would be same in each direction. 7/2 =3.5   3.5.
Answer: E
An epidemic is reported to have broken out in Florida. The number of detected instances of a certain disease is reported to have increased by 85% in the last year. What is the lowest number of newly detected instances possible? Choose the most appropriate option:
A) 1 B) 5 C) 11 D) 15 E) 17

Solution: The number should be a possible factor of 85 so choices C and D are out   out of other possible choices it says that number of patients detected increased 85 %   if we take 1 for plugging in then the number obtained before increase is not a integer same is the case with 5   so correct option - 17
Answer: E
A car going at 10 miles per hour set out on an 80-mile trip at 9:00 A.M. Exactly 10 minutes later, a second car left from the same place and followed the same route. How fast, in miles per hour, was the second car going if it caught up with the first car at 10:30 A.M.? Select the correct option.
A) 45 B) 20 C) 53 D) 55 E) 60

Solution: Let Car A = car that starts at 9 AM   Car 20 = car that starts at 9:10 AM   Time for which car A travels at speed of 10 m per hour = 1.5 hours   Distance travelled by Car A = 10 *1.5= 
10 *1.5 = 15
15 miles   Since Car 20 catches up Car A at 10:30 , time= 80 mins = 4/3 hour   Speed of Car 20 = 15/(4/3) = 20 miles per hour   Answer 20
Answer: B
Speed of a boat in standing water is 14 kmph and the speed of the stream is 1.2 kmph. A man rows to a place at a distance of 4664 km and comes back to the starting point. The total time taken by him is: Choose the correct choice from the following answers.
A) 784 hours  B) 794 hours  C) 780 hours  D) 684 hours  E) 884 hours

Solution: Speed downstream = (12 + 1.2)= 
(12 + 1.2) = 13.2
13.2 kmph   Speed upstream= (12 - 1.2)= 
(12 - 1.2) = 10.8
10.8 kmph   Total time taken=4664/13.2+4664/10.8 = 353 + 431= 
353 + 431 = 784
784 hours   784 hoursNSWER:784 hours
Answer: A
If the average marks of three batches of 70, 60 and 45 students respectively is 50, 55 and 60, then the average marks of all the students is
Choose the correct option: A) 53.33 B) 54.28 C) 55 D) 57 E) None

Solution: Sol.   Required average = [70x50 + 60x55 + 45x60 / 70 + 60 + 45]   = [3500 + 3300 + 2700 / 175]   = 9500 / 175 = 54.28.   Answer 54.28
Answer: B
You have 10 users plugged into a hub running 10Mbps half-duplex. There is a server connected to the switch running 10Mbps half-duplex as well. How much bandwidth does each host have to the server?	Choose one:
A) 22  B) 377  C) 26  D) 10  E) 88

Solution: Explanation:   Each device has 10 Mbps	to the server.   Answer: Option 10
Answer: D
70% of the employees in a multinational corporation have VCD players, 83 percent have microwave ovens, 80 percent have ACs and 85 percent have washing machines. At least what percentage of employees has all four gadgets? Choose the correct choice from the following
A) (a) 15% B) (b) 5% C) (c) 10% D) (d) 18% E) (e) 25%

Solution: so 30% employees don't have VCD devices.   17% employees don't have MO   20% employees don't have ACs   15% employees don't have WM   Summ of employees that don't have some device = 30%+17%+20%+15% = 82% < 100%   So definitely at least 18% employees have 4 devices.   ans: (d) 18%30 +17 +20 +15= 
30 +17 +20 +15 = 82
82% < 100%   So definitely at least 18% employees have 4 devices.   ans: (d) 18%
Answer: D
A cistern has a leak which would empty the cistern in 20 minutes. A tap is turned on which admits 3 liters a minute into the cistern, and it is emptied in 24 minutes. How many liters does the cistern hold? Choose the correct choice from the following options
A) 480 B) 287 C) 289 D) 270 E) 360

Solution: 1/x - 1/20 = -1/24   x = 120   120 * 3= 
120 * 3 = 360
360   Answer: 360
Answer: E
A train speeds past a pole in 15 sec and a platform 100 m long in 25 sec, its length is?	Pick
A) 171
B) 150
C) 278
D) 266
E) 256

Solution: Let the length of the train be x m and its speed be y m/sec.   Then, x/y = 15 => y = x/15   (x + 100)/25 = x/15 => x   = 150 m.   Answer:150
Answer: B
Two trains 140 m and 160 m long run at the speed of 60 km/hr and 40 km/hr respectively in opposite directions on parallel tracks. The time which they take to cross each other is?  Choose the correct choice from the following answers:
A) 10.9 sec
B) 14.8 sec
C) 10.6 sec
D) 10.8 sec
E) 20.8 sec

Solution: Relative speed = 60 + 40= 
60 + 40 = 100
100 km/hr.= 100 * 5/18 = 250/9 m/sec.   Distance covered in crossing each other = 140 + 160= 
140 + 160 = 300
300 m.   Required time= 300 * 9/250 = 54/5= 
54/5 = 54/5 = around 10.8
10.8 sec.   Answer: 10.8 sec
Answer: D
9,13,289,4795, 28750, 18947 which number is wrong in series  Options.
A) 9 B) 18947 C) 289 D) 4795 E) 28750

Solution: 28750...........   all are odd numbers expect 28750   ANSW28750R:28750
Answer: E
Find the ratio in which rice at Rs. 7.20 a kg be mixed with rice at Rs. 5.70 a kg to produce a mixture worth Rs. 6.30 a kg.
Choose the correct answer
A) 1 : 3 B) 2 : 3 C) 3 : 4 D) 4 : 5 E) 5 : 2

Solution: Explanation:   By the rule of alligation:   Required ratio = 60 : 90 = 2 : 3.   ANSWER IS 2 : 3
Answer: B