-
A train covers a distance of 10 km in 12 minutes. If its speed is decreased by 5 km/hr, the time taken by it to cover the same distance will be :
-
- 10 minutes
- 13 minutes 20 sec
- 13 minutes
- 11 minutes 20 sec
Correct Option: B
| Speed of train = | |
| Time |
| = | kmph | |||||
| 60 | ||||||
| = | = 50 kmph | |
| 12 |
New speed = 45 kmph
| ∴ Required time = | hour | |
| 45 |
| = | × 60 minutes | |
| 9 |
| = | minutes | |
| 3 |
or 13 minutes 20 seconds
