Phil can paint the garage in 12 hours, and Rick can do it in10 hours. They work
ID: 3089147 • Letter: P
Question
Phil can paint the garage in 12 hours, and Rick can do it in10 hours. They work together for 3 hours. How long willit take Rick to finish the job alone? solve, show each step,complete chart. Work rate x time = work done Phil ? 3 ? Rick ? x +3 ? Phil can paint the garage in 12 hours, and Rick can do it in10 hours. They work together for 3 hours. How long willit take Rick to finish the job alone? solve, show each step,complete chart. Work rate x time = work done Phil ? 3 ? Rick ? x +3 ?Explanation / Answer
Phil can paint the garage in 12 hours, and Rick can do it in10 hours. They work together for 3 hours. How long willit take Rick to finish the job alone? solve, show each step,complete chart. Work rate x time = work done Phil 1/12 3 3/12 Rick 1/10 x +3 1/10 (x+3)Phil does 1/12 per hour
Rich does 1/10 per hour
together they do 1/12 + 1/10
so in 3 hours they do 3(1/12 +1/10)
common denominator = 60
=3(5/60 +6/60)