SOLUTION: If it takes 3 hours to travel 24 miles downstream and 6 hours to travel upstream, how fast is the current if the speed of the boat remains constant? A 1 mph B 2 mph C 3 mph D 4

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Question 288456: If it takes 3 hours to travel 24 miles downstream and 6 hours to travel upstream, how fast is the current if the speed of the boat remains constant?
A 1 mph
B 2 mph
C 3 mph
D 4 mph
thankyou.
Found 2 solutions by richwmiller, Alan3354:
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
3(b+c)=24
6(b-c)=24
b+c=8
b-c=4
2b=12
b=6
c=2
current is 2 mph


Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
If it takes 3 hours to travel 24 miles downstream and 6 hours to travel upstream, how fast is the current if the speed of the boat remains constant?
A 1 mph
B 2 mph
C 3 mph
D 4 mph
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The speed downstream is 24/3 mph = 8 mph
The speed upstream is 24/6 = 4 mph
The boat's speed is the average, = (4 + 8)/2 = 6 mph
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The current is difference, = 8-6 = 2 mph
B