SOLUTION: Romy can paint a car in 8 hours. Robert can paint the same car in 6 hours. They start to paint the car together. After 2 hours, romy leaves for lunch and Robert finishes painting t

Question 97619: Romy can paint a car in 8 hours. Robert can paint the same car in 6 hours. They start to paint the car together. After 2 hours, romy leaves for lunch and Robert finishes painting the car alone. How long does it take Robert to finish painting?
Thanks!
Answer by checkley71(8403) (Show Source): You can put this solution on YOUR website!
ROMY COMPLETES 2/8 OF THE JOB OR 1/4.
ROBERT COMPLETES 2/6 0F THE JOB OR 1/3
1/4+1/3=(3+4)/12=7/12 OF THE JOB IS COMPLETED IN THE FIRST 2 HOURS WHEN THEWY WORK TOGETHER.
ROBERT NEEDS TO COMPLETE THE REMAINING 5/12. THUS:
5/12*6=30/12=2.5 HOURS FOR ROBERT TO COMPLETE THE JOB BY HIMSELF.
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