<PRE><B>Question 248222</B>
Two plumbers worked a combined 22 hours on a job. One plumber makes $22 per hour, and the other plumber makes $18 per hour. If their combined pay for this job was $448, how many hours did each work?
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P1 + P2 = 22 hours
P1*22 + P2*18 = 448
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P2 = 22 - P1
Sub for P2 in the 2nd eqn
P1*22 + 18*(22-P1) = 448
4P1 = 52
P1 worked 13 hours
P2 worked 9 hours
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