SOLUTION: In 7 hours, a coast guard cutter can sail 126 miles with an ocean current or it can sail 84 miles against the current. Find the speed of the cutter in still water and find speed of
Question 925340: In 7 hours, a coast guard cutter can sail 126 miles with an ocean current or it can sail 84 miles against the current. Find the speed of the cutter in still water and find speed of the current. Answer by TimothyLamb(4379) (Show Source):
You can put this solution on YOUR website! x = boat speed in still water
y = water current speed
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s = d/t
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with current:
x + y = 126/7
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against current:
x - y = 84/7
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put the system of linear equations into standard form
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x + y = 126/7
x - y = 84/7
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x + y = 18
x - y = 12
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solution:
x = boat speed in still water = 15 mph
y = water current speed = 3 mph
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