The speeds of A and B are in the ratio 3 : 5. A takes 30 minutes more than B to reach the destination. In how much time does A reach the destination?

1 hour 15 minutes

As , Speed is inversely proportional to Time

Ratio of              A     :     B

Speed                3      :     5

Time                  5      :     3

According to question ,

2R = 30 minutes

1R = 15 minutes

5R = 5 × 15 = 75 minutes

= 1 hour 15 minutes

So , Time taken by A to reach the destination is 1 hour 15 minutes .