question:Express 60 mps in kmph?
Options:
(A) 200
(B) 182
(C) 216
(D) 127
(E) 400
answer:(C)
Stream of consciousness:60 * 18/5 = 216 kmph

question:A 400 meter long train crosses a man standing on the platform in 10 sec. What is the speed of the train?
Options:
(A) 144
(B) 108
(C) 278
(D) 126
(E) 112
answer:(A)
Stream of consciousness:S = 400/10 * 18/5 = 144 kmph

question:90 is increased by 50%. Find the final number.
Options:
(A) 100
(B) 110
(C) 135
(D) 140
(E) 160
answer:
(C)
Stream of consciousness:Final number = Initial number + 50%(original number) = 90 + 50%(90) = 90 + 45 = 135.