A takes 10 minutes more than B in covering a certain distance. If their speeds are in the ratio of 3 : 4, then what is the time taken by B to cover the same distance?

30 minutes

Speed = \(\frac{DIstance}{Time}\)

We know ,

Speed is inversely proportional to Time

Ratio of ,         A  :   B

Speed             3  :   4

Time               4  :   3

According to question ,

( 4 - 3)R = 1R = 10 minutes

3R = 3 × 10 = 30 minutes

So , time taken by B is 30 minutes