I cant figure out how to layout this problem. I went the math lab on campus and the tutor kind of just gave up and went home early. Please help, I have a test on Tuesday. Here it is.
One pipe can fill a pond in 3 weeks, and a second pipe can fill it in 5 weeks. How ever, evaporation and seepage can empty the pond in 10 weeks. If both pipes are used, how long will it take to fill the pond?
What I think I know so far is that you break the work down into fractions of what each pipe does in a week. Pipe 1 fills 1/3 of the pond in one week, pipe 2 fills 1/5 of the pond in one week. Evaporation and seepage removes 1/10 of the contents per week. How do I lay it out correctly to equal 1 full pond in terms of how long it took to fill it up?
The answer according to the back of the book is 2 and 4/13 weeks.
One pipe can fill a pond in 3 weeks, and a second pipe can fill it in 5 weeks. How ever, evaporation and seepage can empty the pond in 10 weeks. If both pipes are used, how long will it take to fill the pond?
What I think I know so far is that you break the work down into fractions of what each pipe does in a week. Pipe 1 fills 1/3 of the pond in one week, pipe 2 fills 1/5 of the pond in one week. Evaporation and seepage removes 1/10 of the contents per week. How do I lay it out correctly to equal 1 full pond in terms of how long it took to fill it up?
The answer according to the back of the book is 2 and 4/13 weeks.
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