Raj swims for 6 ½ hours while going 24 km downstream and 36 km upstre – McqOptions

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1.	Raj swims for 6 ½ hours while going 24 km downstream and 36 km upstream. But he takes just 6 hours to swim 36 km downstream and 24 km upstream. At what rate is the river flowing?
A.	6 km/hr
B.	3 km/hr
C.	2 km/hr
D.	4 km/hr
Answer» D. 4 km/hr

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