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in Mathematics by (69.5k points)

A train leaves Pune at 7 : 30 am and reaches Mumbai at 11 : 30 am. Another train leaves Mumbai at 9 : 30 am and reaches Pune at 1 :00 pm. Assuming that the two trains travels at constant speeds, at what time do the two trains cross each other – 

(A) 10: 20 am 

(B) 11 : 30 am 

(C) 10 : 26 am 

(D) Data not sufficient 

1 Answer

+1 vote
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Best answer

Correct option (C) 10 : 26 am 

Explanation:

First train from Pune to Mumbai takes 4hrs. 

Second train from Mumbai to Pune takes 3.5hrs. 

Speed of train from Pune to Mumbai is V1 = d/4

Speed of train from Mumbai to Pune is V2 = d/3.5

Distance traveled by first train till 9:30 is x = d/4 x 2 = d/2

Say now both trains meet after time from 9:30 

Then both train meet at 9.30 + 56 min = 10 : 26 am 

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