SOLUTION: The Allen family and the James family each used their sprinklers last summer. The water output rate for the Allen family's sprinkler was 20 L per hour. The water output rate for th

Question 1088693: The Allen family and the James family each used their sprinklers last summer. The water output rate for the Allen family's sprinkler was 20 L per hour. The water output rate for the James family's sprinkler was 15 L per hour. The families used their sprinklers for a combined total of 55 hours, resulting in a total water output of 1000 L. How long was each sprinkler used?
Answer by ikleyn(52778) (Show Source): You can put this solution on YOUR website!
.
I know that this sort of problems was just solved from 20 to 40 times in this site.

I don't want to repeat these solutions.

I simply took these keywords


    "used their sprinklers last summer." algebra.com

and put them into the GOOGLE search.

I got uncounted number of outputs.

I put first five outputs below together with the links.

Probably, I have nothing to add to this material.

You can choose ANY of them and use it as a sample.

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SAMPLES
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The Robinson family and the Sanders family each used their sprinklers last summer.
The water output rate for the Robinson family's sprinkler was 25L per hour.
The water output rate for the Sanders family's sprinkler was 20L per hour.
The families used their sprinklers for a combined total of 55 hours, resulting in a total water output of 1250L.
How long was each sprinkler used?
https://www.algebra.com/algebra/homework/word/misc/Miscellaneous_Word_Problems.faq.question.634013.html
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The Kim family and the Chen family each used their sprinklers last summer.
The water output rate for the Kim family's sprinkler was 40L per hour.
The water output rate for the Chen family's sprinkler was 20L per hour.
The families used their sprinklers for a combined total of 35 hours, resulting in a total water output of 1100L .
How long was each sprinkler used?
https://www.algebra.com/algebra/homework/equations/Equations.faq.question.739862.html
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The Edwards family and the Chen family each used their sprinklers last summer.
The water output rate for the Edwards family's sprinkler was 30L per hour.
The water output rate for the Chen family's sprinkler was 20L per hour.
The families used their sprinklers for a combined total of 65 hours, resulting in a total water output of 1700L .
How long was each sprinkler used?
https://www.algebra.com/algebra/homework/word/misc/Miscellaneous_Word_Problems.faq.question.872783.html
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he Scott family and the Cox family each used their sprinklers last summer.
The water output rate for the Scott family's sprinkler was 35L per hour.
The water output rate for the Cox family's sprinkler was 25L per hour.
The families used their sprinklers for a combined total of 45 hours, resulting in a total water output of 1275L.
How long was each sprinkler used?
https://www.algebra.com/algebra/homework/equations/Equations.faq.question.1063148.html
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The Jenkins family and the Green family each used their sprinklers last summer.
The water output rate for the Jenkins family's sprinkler was 40L per hour.
The water output rate for the Green family's sprinkler was 15L per hour.
The families used their sprinklers for a combined total of 55 hours, resulting in a total water output of 1575L.
How long was each sprinkler used?
https://www.algebra.com/algebra/homework/word/misc/Miscellaneous_Word_Problems.faq.question.1038040.html
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