Mathematics, 27.06.2019 11:30, icantspeakengles

Working together, rocco and giulia can paint a room in 3 hours. it would have taken rocco 7 hours to do the job alone. which equation can be used to determine r, giulia’s rate of work in parts per hour? a- 3/7+3r=7 b- 3/7 + 3r =1 c- 1/7 = r d- 3/7 = 3r

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Working together, rocco and giulia can paint a room in 3 hours. it would have taken rocco 7 hours to...