A boat goes a distance of 4 km upstream in 2 hours and the same distance downstream in 20 minutes. How long will it take to go \(10\frac{1}{2}\) km in still water?

A boat goes a distance of 4 km upstream in 2 hours and the same distan

1.	A boat goes a distance of 4 km upstream in 2 hours and the same distance downstream in 20 minutes. How long will it take to go \(10\frac{1}{2}\) km in still water?
A.	48 minutes
B.	1 hour
C.	\(1\frac{1}{4}\) hours
D.	\(1\frac{1}{2}\) hours
Answer» E.

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A boat goes a distance of 4 km upstream in 2 hours and the same distance downstream in 20 minutes. How long will it take to go \(10\frac{1}{2}\) km in still water?

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