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A boat travels 24 km upstream in 6 hours and 20 km downstream in 4 hours. Then the speed of boat in still water and the speed of water current are respectively
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- 4 kmph and 3 kmph
- 4.5 kmph and 0.5 kmph
- 4 kmph and 2 kmph
- 5 kmph and 2 kmph
- 4 kmph and 3 kmph
Correct Option: B
On the basis of above given question ,
| Rate upstream = | = 4 kmph | |
| 6 |
| Rate downstream = | = 5 kmph | |
| 4 |
| ∴ Speed of boat in still water = | ||
| 2 |
| ∴ Speed of boat in still water = | (4 + 5) = 4.5 kmph | |
| 2 |
| ∴ Speed of current = | ||
| 2 |
| Speed of current = | (5 - 4) = 0.5 kmph | |
| 2 |
We can find the required answer with the help of given formula :
| Here, p = | = 5 kmph | |
| 4 |
| q = | = 4 kmph | |
| 6 |
| Speed of Boat = | = | = 4.5kmph | ||
| 2 | 2 |
| Speed of Stream = | = | = 0.5kmph | ||
| 2 | 2 |
