2014 · Q22
A train travels at a speed of 40 km/hr and another train at a speed of 20 m/s. What is the ratio of speed of the first train to that of the second train?
Elementary MathematicsTime, Speed and Distance
- A2 : 1
- B5 : 9
- C5 : 3
- D9 : 5
Explanation
20 m/s = 72 km/hr; ratio = 40 : 72 = 5 : 9.