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Word problems ANSWER ASAP

"In still water, Derek can paddle his canoe at 6.5 km/h. On a river, the canoe travels faster downstream than upstream because of the current. In the morning Derek travels upstream and takes 5 hours and then in the afternoon Derek travels downstream the same distance and takes 2 hours. What is the speed of the current? Answer to the nearest tenth."

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User Sirthud
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1 Answer

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Let the speed of current be x km/ hr
Upsetram = ( 6.5 -x) km/ hr
Downstram = ( 6.5 + x) km/ hr
Distance = Speed x Time

5 ( 6.5-x) = 2 ( 6.5+x)
32.5 -5x =13 +2x
7x = 19.5
x =2.7857142 km/ hr
ANSWER: 2.79 km/ hr
User LeBird
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