Asked by maya
river flows at rate of 1km/hr.a boat takes 2 times as long to row a distance in upstream as to row the same distance in downstream.the speed of boat instill water?
Answers
Answered by
Scott
r + 1 = d / t
r - 1 = d / 2t ... 2(r - 1) = d / t
substituting ... 2r - 2 = r + 1
r - 1 = d / 2t ... 2(r - 1) = d / t
substituting ... 2r - 2 = r + 1
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