P and Q are two stations 50 Km apart. X left stations P for station Q at the speed of 4 Km/hr and Y left station Q for station P at the speed of 6 Km/hr. They cross each other after

A) 4 hrs
B) 5 hrs

C) 6 hrs
D) 8 hrs

Correct answer:
B) 5 hrs

Description for Correct answer:

t = \( \Large \frac{50}{4 + 6} = 5 hrs\)


Please provide the error details in above question

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