Mathematics · Speed, Time and Distance
The speed of a boat in still water is 2.5 times its upstream speed. The boat requires 6 hours less to travel a distance of D km downstream than it takes to travel the same distance upstream. What is the total time taken by the boat to cover D km upstream and D km downstream together?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 112 hours
- 210 hours✓
- 39 hours
- 48 hours
Correct answer
10 hours
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