SOLUTION: Hello! A boat goes 630 miles downstream in the same time it can go 540 miles upstream. The speed of the current is 3 miles per hour. Find the speed of the boat in still water.

Question 335675: Hello!
A boat goes 630 miles downstream in the same time it can go 540 miles upstream. The speed of the current is 3 miles per hour. Find the speed of the boat in still water.
Thank you!

Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Rate*Time=Distance
.
.
.
Let the speed of the boat be B.
Downstream,
1.
Upstream,
2.
From eq. 1,

Substitute into eq. 2,

mph
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