Question

A and B have the same amount of petrol left in the respective cars. A can drive for 4 hours whereas B can drive for 5 hours with the same amount of petrol left. Both of them start driving at the same time. Atter few hours, they find out that the same amount of petrol remaining in the one of the car is four times the other car. How long did they drive?​

Answer 1

Because he A drive fast and B drive slowly.