76. A boat running downstream covers a distance of 16 km in 2 hours while for covering the same distance upstream, it takes 4 hours. What is the speed of the boat in still water?

(a) 4 km/hr

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(b) 6 km/hr

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(d) Data inadequate

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Solution

The correct option is B
(b) 6 km/hr

Ans76 b

Rate downstream = 16/2 kmph = 8 kmph
Rate upstream = 16/4 kmph = 4kmph

Speed in still water = 1/2(8+4) kmph = 6 kmph

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76. A boat running downstream covers a distance of 16 km in 2 hours while for covering the same distance upstream, it takes 4 hours. What is the speed of the boat in still water?

The correct option is B (b) 6 km/hr Ans76 b Rate downstream = 16/2 kmph = 8 kmph Rate upstream = 16/4 kmph = 4kmph Speed in still water = 1/2(8+4) kmph = 6 kmph

The correct option is B
(b) 6 km/hr

Ans76 b

Rate downstream = 16/2 kmph = 8 kmph
Rate upstream = 16/4 kmph = 4kmph

Speed in still water = 1/2(8+4) kmph = 6 kmph