1. A boat’s speed with the current is 15 kmph and the boat’s speed against the current is 5 kmph. What is the speed of the current?
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By: anil on 05 May 2019 01.14 am
With the current => downstream
Against the current => upstream
Let the speed of the boat be ‘s’ and the speed of the river be ‘r’.
So, s - r = 5 and s + r = 15
=>2s = 20 => s = 10 and r = 5 kmph
Speed of the current = 5 kmph
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Against the current => upstream
Let the speed of the boat be ‘s’ and the speed of the river be ‘r’.
So, s - r = 5 and s + r = 15
=>2s = 20 => s = 10 and r = 5 kmph
Speed of the current = 5 kmph