Reasoning: 1: 2/5 = 5: 2
2/7 * 21 = 6
Ans: (B)
Question: A 21 cm long wire is to be cut into two pieces so that one piece will be 2/5th of the other, how many centimeters will the shorter piece be?
Options:
(A) 12
(B) 6
(C) 88
(D) 77
(E) 14
Rationale: If x = 2 then f(x) = 8/15 and f(1/x) = -8/15 which is equal to -f(x)
The answer: (A)
Question: If f(x) = x^3/(x^4 - 1), what is f(1/x) in terms of f(x)?
Options:
(A) -f(x)
(B) f(x)
(C) 2*f(x)
(D) 1/f(x)
(E) 2/f(x)
Reasoning: 10 * 150 = 1650
3 * 100 + 5 * 150 = 1050
1650 1050 = 600
Ans: (E)
Question: A women purchased 3 towels @ Rs.100 each, 5 towels @ Rs.150 each and two towels at a certain rate which is now slipped off from his memory. But she remembers that the average price of the towels was Rs.165. Find the unknown rate of two towels?
Options:
(A) A) 400
(B) B) 450
(C) C) 500
(D) D) 550
(E) E) 600
Rationale: (80/100) * 60 (4/5) * 25
48 - 20 = 28
The answer: (B)
Question: How much is 80% of 60 is greater than 4/5 of 25?
Options:
(A) 15
(B) 28
(C) 16
(D) 12
(E) 73
Reasoning: D = 210 + 120 = 330
S = 54 * 5/18 = 15 mps
T = 330/15 = 22 sec
Ans: (B)
Question: A train 210 meters long is running with a speed of 54 kmph. The time taken by it to cross a tunnel 120 meters long is?
Options:
(A) 29
(B) 22
(C) 48
(D) 99
(E) 11
Reasoning: The length of cloth painted by one man in one day = 48 / 4 2 = 6 m
No. of days required to paint 36 m cloth by 6 men = 36/ 6 6 = 1 day.
Ans: (A)
Question: If 4 men can colour 48 m long cloth in 2 days, then 6 men can colour 36 m long cloth in
Options:
(A) 1 day
(B) 2 days
(C) 3 days
(D) 4 days
(E) 5 days