A boat can travel 37 mph in still water. If it travels 378 miles......HELP!?

C

Carousel

New member
(378 + 288)/37 = 18 hours (that's how long both journeys are)

Therefore one journey is 9 hours. When it travels with the current, the speed is 378/9 = 42mph (which is 5mph faster than in still water).

When it travels against the current, it's speed is 288/9 = 32mph (which is 5 mph SLOWER than in still water).

The speed of the current is therefore 5mph.
 
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Vasiliy

New member
A boat can travel 37 mph in still water. If it travels 378 miles with the current in the same length of time it travels 288 miles against the current, what is the speed of the current? plz help!.....best answer gets 10 points:)
 
C

cidyah

New member
Let x be the speed of the current.
Let y be the speed of boat in still water.
378/(x+y) = 288/(y-x) = 37
37x+37y =378
-37x+37y =288
74y =666
y=9
37x +37(9) = 378
37x = 45
x=45/37 = 1.22 mph
 
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