Question: A train running at the speed of 60 km/hr crosses a pole in 9 sec. What is the length of the train?
Options:
(A) 120 m
(B) 190 m
(C) 115 m
(D) 110 m
(E) 150 m
Ans: (E)
CoT: Speed = 60 * 5/18 = 50/3 m/sec
Length of the train = speed * time = 50/3 * 9 = 150 m
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Question: 30 pens and 75 pencils were purchased for 570. If the average price of a pencil was 2.00, find the average price of a pen.
Options:
(A) 10
(B) 11
(C) 12
(D) 13
(E) 14
Ans: (E)
CoT: Since average price of a pencil = 2
Price of 75 pencils = 150
Price of 30 pens = (570 150) = 360
Average price of a pen = 42060 = 14
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Question: A train 150 meters long completely crosses a 240 meters long bridge in 42 seconds. What is the speed of the train is?
Options:
(A) 32
(B) 33
(C) 88
(D) 66
(E) 09
Ans: (B)
CoT: S = (150 + 240)/42 = 390/42 * 18/5 = 33
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