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Montano1993 [528]
3 years ago
12

A boat travels 30 miles up the river in the same amount of time it takes to travel 38 miles down the same river. If the current

is 2 miles per hour, what is the speed of the boat in still water?
Mathematics
1 answer:
Ksenya-84 [330]3 years ago
5 0
X miles per hour  -  <span> speed of the boat in still water
(x - 2)  -  speed up the river
(x + 2)  -  speed down the river
</span>
\frac{30}{x - 2} = \frac{38}{x + 2}
30 * (x + 2) = 38 * (x - 2)
30x + 60 = 38x - 76
- 8x = - 136
x = 17 miles per hour  -  <span>the speed of the boat in still water.</span>
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