A boat running downstream covers 28 km in 7 hours, while for covering the same distance upstream it takes 14 hours. What is the speed of the boat in still water?

A boat running downstream covers 28 km in 7 hours, while for covering

1.	A boat running downstream covers 28 km in 7 hours, while for covering the same distance upstream it takes 14 hours. What is the speed of the boat in still water?
A.	4 kmph
B.	3 kmph
C.	4.2 kmph
D.	5 kmph
E.	6 kmph
Answer» C. 4.2 kmph

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A boat running downstream covers 28 km in 7 hours, while for covering the same distance upstream it takes 14 hours. What is the speed of the boat in still water?

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