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Question

Two trains, each of length 125metre, are running in parallel tracks in opposite directions. One trains is running at a speed 65km/hour and they cross each other in 6 seconds. The speed of the other train is:

A
75km/hour
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B
85km/hour
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C
95km/hour
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D
105km/hour
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Solution

The correct option is B 85km/hour
Let speed of second
train = x km/hr
time = l1+l2Relativespeedinopp.direction.
6=125+125(65+x)518
6=(250×18)(65+x)5
65+x=50×3
x = 150 - 65
x = 85 km / hr.

1212837_1339456_ans_386ead14a8b94296b6ea1df3203dd1d8.jpg

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