Question

The speeds of three cars are in the ratio 3:4:5. The ratio between the times taken by these cars to travel the same distance is?

Answer 1

The ratio between time taken by these cars is 6:4:3

Step-by-step explanation:

Let the distance covered = x

We know that speed = distance / time

⇒Time taken to cover the distance will be inversely proportional to its speed

So, Time taken  by car A=$\frac{x}{2}$

      Time taken  by car B=$\frac{x}{3}$

       Time taken  by car C$=\frac{x}{4}$

Also,ratio of time taken  by these three cars $=(x/2) : (x/3) : (x/4)$

                                                                 =(12x/2) : (12x/3) : (12x/4)

                                                                 = 6 : 4 : 3