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The upstream speed of a boat is 15 kmph and it travels a distance of 110 kms in 2 hours during downstream. Find the time taken by the boat to travel 165 kms upstream and 165 kms downstream.1. 162. 153. 124. 14 |
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Answer» Correct Answer - Option 4 : 14 Given: The upstream speed of a boat is 15 kmph and it travels a distance of 110 kms in 2 hours during downstream. Formula: Time taken by boat to travel upstream = D/(speed of bota in still water – speed of the stream) Time taken by boat to travel downstream = D/(speed of bota in still water + speed of the stream) Calculation: The upstream speed of a boat is 15 kmph Downstream speed = 110/2 = 55 kmph Required time = 165/15 + 165/55 = 11 + 3 = 14 hours |
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