A and b are two stations 390 km apart

Asked by admin @ 17/08/2021 in Math viewed by 285 People

A and b are two stations 390 km apart. A train starts from a at 10

a.M. And travels towards b at 65 kmph. Another train starts from b at 11
a.M. And travels towards a at 35 kmph. At what time do they mdet?

Answered by admin @ 17/08/2021

Answer:

Step-by-step explanation:

If we think about it, no matter how far each train travels, when they meet, they will have together travelled 390k.

If we let x = the time travelled by train A, then train B travels x - 1 hours, because it left one hour later.

Train A's distance is then 65x and train B's is 35(x - 1) = 35x - 35.

Together, the trains travel the 390k

65x + 35x - 35 = 390

100x - 35 = 390

100x = 425

x = 4.25 = 4 hours and 15 minutes

Soooo, the two trains meet at 2:15.

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