SOLUTION: Officials begin to release water from a full man-made lake at a rate that would empty the lake in
6 weeks, but a river that can fill the lake in
15 weeks is replenishing the la
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-> SOLUTION: Officials begin to release water from a full man-made lake at a rate that would empty the lake in
6 weeks, but a river that can fill the lake in
15 weeks is replenishing the la
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Question 989360: Officials begin to release water from a full man-made lake at a rate that would empty the lake in
6 weeks, but a river that can fill the lake in
15 weeks is replenishing the lake at the same time. How long does it take to empty the lake? Express your answer as a fraction reduced to lowest terms, if needed.
The drain empties the full lake in six weeks, so in one week the drain empties th of the lake. Likewise, in one week, the fill replenishes of the lake. Working together, the lake drains at a rate of:
of the lake per week. Applying the LCD:
of the lake is emptied in one week, so it takes
weeks to empty the lake.
John
My calculator said it, I believe it, that settles it
