2016 · Q39
The speeds of three cars are in the ratio 2 : 3 : 4 . What is the ratio between the times taken by these cars to travel the same distance ?
Elementary MathematicsTime, Speed and Distance
- A4 : 3 : 2
- B2 : 3 : 4
- C4 : 3 : 6
- D6 : 4 : 3
Explanation
For a fixed distance, time is inversely proportional to speed. Hence the time ratio is 1/2:1/3:1/4. Multiplying through by 12 gives 6:4:3 (option D).