The ratio of the speed of the boat and the speed of the current is 7:1. The ratio of time taken to travel the distance 'D' downstream and (D - 40) upstream is 5 : 4. Find distance D.
1
135 km
2
100 km
3
110 km
4
140 km
5
120 km
The ratio of the speed of the boat and the speed of the current is 7:1. The ratio of time taken to travel the distance 'D' downstream and (D - 40) upstream is 5 : 4. Find distance D.