Normal speed of a boat in still water is 4 times the speed of the river....
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Normal speed of a boat in still water is 4 times the speed of the river. The boat goes upstream from P to Q and takes 4 hrs. By what percent should the boat increase/decrease its speed if it's required to reach P from Q in exactly 3 hours? 1. Increases by 20% 2. Increases by 25% 3. Decreases by 20% 4. Decreases by 25% 5. None of these Normal speed of a boat in still water is 4 times the speed of the river. The boat goes upstream from P to Q and takes 4 hrs. By what percent should the boat increase/decrease its speed if it's required to reach P from Q in exactly 3 hours? 1. Increases by 20% 2. Increases by 25% 3. Decreases by 20% 4. Decreases by 25% 5. None of these
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Given Let the speed of the river is x msec So normal speed of the ... View the full answer
Related Book For
Thermodynamics for Engineers
ISBN: ?978-1133112860
1st edition
Authors: Kenneth A. Kroos, Merle C. Potter
Posted Date:
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