Sally can paint a room in 7 hours while it takes Steve 4 hours to paint the same room. How long would it take them to paint the room if they worked together?

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asked Jun 24, 2019 42.1k views

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Sally can paint a room in 7 hours while it takes Steve 4 hours to paint the same room. How long would it take them to paint the room if they worked together?

Mathematics
high-school

Noha Kareem asked

by Noha Kareem

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The formula for this is
worker 1 * worker 2 / worker 1 + worker 2

7 * 4 / 7 + 4 =
28 / 11 =
2.54 hours

Scransom answered Jun 27, 2019

by Scransom

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