17. In one hour a motorboat goes 12 km
along the stream and 6 km against the
stream. What is the speed of the boat in
still water ?
(1)8 km/hour
(2) 10 km/hour
(3)9 km/hour
(4) 12 km/hour
Answers
Answered by
5
Speed In still water=Average of speed in upstream and speed in downstream
=1/2(12+6)=9kmph
Answered by
1
Answer:
9 km/hour
Step-by-step explanation:
1/2(12+6)kmph=9kmph
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