Let the man's rate upstream be
x kmph and that downstream be
y kmph.
Then, distance covered upstream in 8 hrs 48 min = Distance covered downstream in 4 hrs.
| ⟹ |
❨ |
x x 8 |
4 |
❩ |
= (y x 4) |
| 5 |
| ∴ Required ratio = |
❨ |
y + x |
❩ |
: |
❨ |
y - x |
❩ |
| 2 |
2 |
| = |
❨ |
16x |
x |
1 |
❩ |
: |
❨ |
6x |
x |
1 |
❩ |
| 5 |
2 |
5 |
2 |
= 8 : 3.
