Question

X and Y are two stations which are 320 miles apart.A train starts at A certain time from x and travels towards y at 70 mph.After two hours, another train starts from Y and travel towards x at 20 mph. At what time do they meet?

Answer 1

Solution is here

Let the distance travelled by X be 7x

Distance travelled by Y = 2 x 20 = 40m

Hence they will meet at a distance of 320 - 40 = 280m

That is 

7x = 280 or x = 40

Hence they will meet after 40 hours.

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