-
Two trains 180 metres and 120 metres in length are running towards each other on parallel tracks, one at the rate 65 km/hour and another at 55 km/hour. In how many seconds will they be clear of each other from the moment they meet ?
-
- 6
- 9
- 12
- 15
Correct Option: B
| Required time = | |
| Relative speed |
Relative speed = 65 + 55
= 120 kmph
| Required time = | |||||
| 18 | |||||
| = | = 9 seconds | |
| 120 × 5 |
