Rationale: D = 540 + 180 = 720
S = 54 * 5/18 = 15 mps
T = 720/15 = 48 se
The answer: (C)
Question: A goods train runs at the speed of 72 km/hr and crosses a 250 m long platform in 26 sec. What is the length of the goods train?
Options:
(A) 49 sec
(B) 50 sec
(C) 48 second
(D) 43 sec
(E) 32 sec
Reasoning: Here both numbers are less than 100. So they are deficient of - 4 and - 3 compared with 100. So
Ans: (B)
Question: Find 96 97
Options:
(A) 91/198
(B) 91/12
(C) 91/13
(D) 91/10
(E) 91/11
Rationale: 112 ounces of a substance has a volume of 48 cubic inches
53 ounces of a substance has a volume of (48/112)*53 = 22 cubic inches
The answer: (D)
Question: The volume of a certain substance is always directly proportional to its weight. If 48 cubic inches of the substance weigh 112 ounces, what is the volume, in cubic inches, of 53 ounces of this substance?
Options:
(A) 27
(B) 36
(C) 42
(D) 22
(E) 147
Reasoning: Speed in still water = (10 + 4)1/2 kmph = 7 kmph.
Ans: (A)
Question: Calculate the speed of a boat in still water (in km/hr) if in one hour, the boat goes 10 km/hr downstream and 4 km/hr upstream.
Options:
(A) 7 kmph
(B) 8 kmph
(C) 9 kmph
(D) 7 kmph
(E) 6 kmph
Rationale: Each number is the product of the previous two numbers, ie 8*32 = 2816.
The answer: (A)
Question: 1,2,2,4,8,32,?(mult)
Options:
(A) 2816
(B) 1816
(C) 2812
(D) 2817
(E) 6816
Rationale: Q of the employees' new bonus is the increase Hence
The answer: (B)
Question: A corporation triples its annual bonus to 50 of its employees. What percent Q of the employees' new bonus is the increase?
Options:
(A) 50%
(B) 6623%
(C) 100%
(D) 200%
(E) 300%