SOLUTION: a boat covers a certain distance downstream in 2 hours.it covers the same distance upstream in 2.5 hours. the speed of the boat i 18 km/hr. find the speed of the water. also find
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Question 1039654: a boat covers a certain distance downstream in 2 hours.it covers the same distance upstream in 2.5 hours. the speed of the boat i 18 km/hr. find the speed of the water. also find the distance covered by the boat Answer by ikleyn(52769) (Show Source):
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A boat covers a certain distance downstream in 2 hours.it covers the same distance upstream in 2.5 hours.
The speed of the boat i 18 km/hr.
Find the speed of the water. Also find the distance covered by the boat
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Base equations are
= 2 (1) (the time downstream)
= 2.5 (2) (the time upstream).
Hence, 2*(18+w) = 2.5*(18-w).
It is your equation to find w, the speed of the current, in .
When you find w, calculate D, the distance, from any equation (1) or (2).
