Asked by John Dosley
a boat traveled against the current for 70 miles for the sane time it traveled with the current for 95 miles. what was the boats average speed if the rate of the current was 5 mi/h?
Answers
Answered by
Steve
since time = distance/speed, if the boat's speed was s, then
70/(s-5) = 95/(s+5)
s = 33
avg speed = totaldistance/totaltime
= (70+95)/(70/28 + 90/38)
= 1254/37 or 33.89 mi/hr
70/(s-5) = 95/(s+5)
s = 33
avg speed = totaldistance/totaltime
= (70+95)/(70/28 + 90/38)
= 1254/37 or 33.89 mi/hr
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