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Question

A train travelling 25 km an hour leaves Aligarh at 9a.m. and another train travelling 35 km and hour starts at 2 p.m. in the same direction. How many km from Aligarh will they be together?

A
750 km
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B
43712km
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C
41712km
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D
40712km
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Solution

The correct option is A 43712km
The train starting at 9 a.m. has travelled by 2 p.m. a distance of (5×25)km. i.e., 125 km.
Relative speed of two trains =(3525); i.e., 10 km. per hour.
The second train shall meet the first train in 12510; i.e., 12.5 hrs.
Distance from Aligarh=12.5×35 km=437.5 km.

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