[Ans] (E)
[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) 287
(B) 699
(C) 677
(D) 168
(E) 150
[CoT] Speed = 60 * 5/18 = 50/3 m/sec
Length of the train = speed * time = 50/3 * 9 = 150 m

[Ans] (A)
[Question] Ravi can do a piece of work in 30 days while Prakash can do it in 40 days. In how many days will they finish it together?
Options:
(A) 17 1/7
(B) 17 1/5
(C) 17 1/8
(D) 17 1/1
(E) 17 1/2
[CoT] 1/30 + 1/40 = 7/120
120/7 = 17 1/7 days

[Ans] (B)
[Question]
A train 350 m long, running with a speed of 63 km/hr will pass a tree in?
Options:
(A) 18 sec
(B) 20 sec
(C) 76 sec
(D) 15 sec
(E) 17 sec
[CoT] Speed = 63 * 5/18 = 35/2 m/sec
Time taken = 350 * 2/35 = 20 sec