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A car can finish a certain journey in 10 hours at a speed of 48 km per hr. In order to cover the same distance in 8 hours, how much the speed be increased by ?
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- 10 kmph
- 12 kmph
- 14 kmph
- 15 kmph
Correct Option: B
Time = 10 hours,
Speed = 48 km per hr.
∴ Distance = Speed × Time
= 48 × 10 = 480 km
Now, this distance of 480 kms is to be covered in 8 hours.
Hence, the required Speed
| = | = | ||
| New time | 8 |
= 60 km per hr.
∴ Increase in speed
= 60 – 48 = 12 km per hr.
