A person rows a distance of \(3\frac{3}{4}\) km upstream in \(1\frac{1}{2}\) hours and a distance of 13 km downstream in 2 hours. How much time (in hours) will the person take to row a distance of 90 km in still water?

A person rows a distance of \(3\frac{3}{4}\) km upstream in \(1\frac{

1.	A person rows a distance of \(3\frac{3}{4}\) km upstream in \(1\frac{1}{2}\) hours and a distance of 13 km downstream in 2 hours. How much time (in hours) will the person take to row a distance of 90 km in still water?
A.	20
B.	18
C.	24
D.	15
Answer» B. 18

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A person rows a distance of \(3\frac{3}{4}\) km upstream in \(1\frac{1}{2}\) hours and a distance of 13 km downstream in 2 hours. How much time (in hours) will the person take to row a distance of 90 km in still water?

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