Length of two trains are 150 m and 200 m respectively and the ratio (shorter: longer) of their speed is 2 : 5. If they cross each other in opposite direction in 15 second then in what time faster train will overtake the slower train.
A) 20 seconds
B) 25 seconds
C) 32 seconds
D) 35 seconds
Answer: D) 35 seconds
Let speed of slower train = 2x ⇒ speed of faster train = 5x ATQ, (150 + 200)/(2x + 5x) = 15 x = 10/3 Time required=350/[50/3–20/3]= 35 seconds
In the question two statements are given, followed by two conclusions, I and II. You have to consider the statements to be true even if it seems to be at variance from commonly known facts. You have to decide which of the given conclusions, if any, follows from the given statements.