Mathematics, 05.09.2019 01:30, bartlettcs9817

30. household chores you can wash one window in 15 minutes and your
sister can wash one window in 20 minutes. how many minutes will it take
to wash 12 windows if you work together?

Answers: 1

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30. household chores you can wash one window in 15 minutes and your
sister can wash one window...