memoryofdale
14.01.2021 •
Mathematics
Mrs. Sanders can clean the windows of her house in
3 hours. Her daughter can clean the windows in 6 hours.
How long will it take them to clean the windows if they
work together?
Solved
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Ответ:
9514 1404 393
2 hours
Step-by-step explanation:
Mrs. Sanders cleans 1/3 of the windows per hour. Her daughter cleans 1/6 of the windows per hour. Working together, they clean 1/3 +1/6 = 1/2 of the windows per hour.
It will take them 2 hours to finish when they work together.
Ответ:
23456789
Step-by-step explanation: