SOLUTION: Two mechanics worked on a car. The first mechanic worked for five hours and the second mechanic worked for 15 hours. Together they charged a total of 1150. What was the rate cha

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Question 532242: Two mechanics worked on a car. The first mechanic worked for five hours and the second mechanic worked for 15 hours. Together they charged a total of 1150. What was the rate charged per hour by each mechanic if the sum of the two rates was $120.00 per hour?
Answer by lwsshak3(11628) About Me  (Show Source):
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Two mechanics worked on a car. The first mechanic worked for five hours and the second mechanic worked for 15 hours. Together they charged a total of 1150. What was the rate charged per hour by each mechanic if the sum of the two rates was $120.00 per hour?
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let x=per hr rate of first mechanic
120-x=per hr rate of second mechanic
Charge=hrs*rate
..
5x+15(120-x)=1150
5x+1800-15x=1150
10x=650
x=65
120-x=55
ans:
rate of first mechanic=$65/hr
rate of second mechanic=$55/hr