-
A man travels 400 kms in 4 hours partly by air and partly by train. If he had travelled all the way by air,
and would have arrived his destination 2 hours early. Find the distance he travelled by train.he would have saved 4 of the time he was in train 5
-
- 95 km.
- 85 km.
- 90 km.
- 100 km.
Correct Option: D
Obviously, 4/5 of total time in train = 2 hours
| ∴ Total time in train = | × 2 = | hours | ||
| 4 | 2 |
Total time to cover 400 km is 4 hours
∴ Time spent in travelling by air
| = 4 − | = | = | hours | |||
| 2 | 2 | 2 |
If 400 kms is travelled by air, then time taken = 2 hours
∴ In 2 hours, distance covered by air = 400 kms
| In 3/2 hours distance covered = | × | = 300 kms | ||
| 2 | 2 |
Distance covered by the train
= 400 – 300 = 100 kms.
