Question
Download Solution PDFTo go a certain distance of 40 km upstream a rower takes 8 hours while it takes her only 5 hours to row the same distance downstream. What was the rower’s speed in still water?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFLet x be the rower’s speed and y be the current speed of water.
Speed while going upstream = (x –y)
⇒ 40/ (x – y) = 8
⇒ x – y = 5 ---- (1)
Now speed while going downstream = (x + y)
⇒ 40/ (x + y) = 5
⇒ x + y = 8 ----(2)
From equation 1 and 2 we get
x = 6.5 km/hr
∴ Rower’s speed = 6.5 km/hrLast updated on Jul 17, 2025
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