One month, Ruby worked 8 hours more than Isaac, and Svetlana worked 4 times as many hours as Ruby. Together they worked 112 hours. Find the number of hours each person worked.

ANSWERS

2015-10-29 22:24:09

R=8+I S=4R R+I+S=112 R+R-8+4R=112 6R=120 R=20 So therefore, Ruby worked 20 hours, Svetlana worked 80 hours, and Isaac worked 12 hours.

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