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Two mechanics worked on a car. The first mechanic worked for 10 hours, and the second mechanic worked for 5 hours. Together they charged a total of $1325. What was the rate charged per hour by each mechanic if the sum of the two rates was $170 per hour?

 Jan 19, 2020
 #1
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x = rate  1              10x = amount

170 -x  = rate 2      5 (170-x) = amount   

 

Added together = 1325

 

10x + 5 (170-x) = 1325

10x + 850 -5x = 1325

5x= 475

x =rate 1 =  $ 95 /hr    (yikes...Doctors' wages !)

 

rate 2 = 170-x =  $ 75/hr  

 Jan 19, 2020

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