kenzbecker kenzbecker

01-04-2018
Mathematics

contestada

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?

Respuesta :

wolf1728 wolf1728

01-04-2018

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

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

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