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A and B start from a point at speeds of 35 km/h and 50 km/h .After 2 hours , B's car runs out of petrol and it takes him 1 hour to refuel it (in this time

, A overtakes him).B starts again .After what time they will meet:-
1.For the 1st time?
2.For the 2nd time?


After 2 hours, A will cover distance = 35*2=70 km as distance = speed * time

After 2 hours B will cover 50*2=100km...

B stops after covering 100 km but car A continues! 
So if car A goes on then the first number that is a multiple of both the numbers is 350. So Both the cars will meet, when Car A covers 350 km!
Please mark it as best!
2 4 2
Not much satisfactory but still ok
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