raul20030603

11.05.2021 • 

Mathematics

The Hayes family and the Russell family each used their sprinklers last summer. The water output rate for the Hayes family's sprinkler was 30 L per hour. The water output rate for the Russell family's sprinkler was 25 L per hour. The families used their sprinklers for a combined total of 55 hours, resulting in a
total water output of 1550 L. How long was each sprinkler used?

Ответ:

61497

23.12.2020

Mathematics

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I Think There Is 10 Possible Numbers.
These Are The Ones I Found:
10 | 12 | 13 | 20 | 21 | 22 | 23 | 30 | 31 | 32

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