Question

A car starts from 4 for b travelling 20 km an hour. 1 hours later another car starts from a and travelling at the rate of 30 km an hour reaches b - hours before the first car. Find the distance from a to



b.

Answer 1

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Let, Distance between A and B be x.

The second car starts 1.5 hour later and reaches 2.5 hour early then first car.---(given)


So, the time difference = 4 hours

Thus,
 x/20 - x/ 30 = 4

x = 240 

Distance between A and B is 240 Km.




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