Two people are standing at a place A and B respectively at a distance 120km apart. Person 1 can run at a speed of 5km/hr and person 2 can run at a speed of 7km/hr . Both of them start running from A and B respectively. When and where will they meet?

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Answer 1 · 2018-03-20T07:26:14

10 hours later...(constant speed)

They will meet at a point (70 km away from Point 1). The point they meet is 50 km away from point 2.

Let me use t as time (in hours).

#(7timest) + (5timest) = 120#

#12timest = 120#

#t=10# hours.