The ratio of the speed of P, Q and R is `10 : 12 : 15` respectively. What is the ratio of the time taken by P. Q and R respectively to cover the same distance?

Options

A. ` 10 : 12 : 15`
B. `15 : 12 : 10`
C. `6 : 5 : 4`
D. `4 : 5 : 6 `

Answer

C