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A man travels for 5 hours 15 minutes. If he covers the first half of the journey at 60 km/h and rest at 45 km/h. Find the total distance travelled by him.
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1028 6 km. 7 - 189 km.
- 378 km.
- 270 km.
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Correct Option: D
Let the distance covered be 2x km.
| Time = | |
| Speed |
According to the question,
| + | = 5 | = | ||||
| 60 | 45 | 60 | 4 |
| ⇒ | = | ||
| 180 | 4 |
| ⇒ 7x = | × 180 | |
| 4 |
| ⇒ x = | = 135 km. | |
| 4 × 7 |
∴ Length of total journey
= 2 × 135 = 270 km.
