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Q:
A) 20 seconds | B) 25 seconds |
C) 32 seconds | D) 35 seconds |
Answer: D) 35 seconds
Explanation:
Explanation:
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