A boat goes a distance of 3 km upstream and \(4\frac{1}{2}\) km downstream in 45 minutes, while it goes 3.6 km upstream and 2.4 km downstream in 39 minutes. The speed (in km/h) of the boat when going downstream is:

A boat goes a distance of 3 km upstream and \(4\frac{1}{2}\) km downs

1.	A boat goes a distance of 3 km upstream and \(4\frac{1}{2}\) km downstream in 45 minutes, while it goes 3.6 km upstream and 2.4 km downstream in 39 minutes. The speed (in km/h) of the boat when going downstream is:
A.	12
B.	9
C.	16
D.	10
Answer» B. 9

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A boat goes a distance of 3 km upstream and \(4\frac{1}{2}\) km downstream in 45 minutes, while it goes 3.6 km upstream and 2.4 km downstream in 39 minutes. The speed (in km/h) of the boat when going downstream is:

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