Question 931717
x = speed of current
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relative speed of the two boats:
(9 - x) + (8 + x)
9 + 8 - x + x
9 + 8 = 17 mph
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s = d/t
t = d/s
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t = 34/17
t = 2
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answer:
in 2 hours they'll be 34 miles apart
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