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Two mechanics worked on a car. The first mechanic charged $85 per hour, the second mechanic charged $90 per hour. The mechanic worked for a combined total of 25 hours, and together they charged a total of $2200. How lond did each mechanic work?

 Aug 3, 2020
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Let the number of hours of 1st mechanic=F
Let the number of hours of 2nd mechanic=S

 

F + S = 25........................(1)
85F + 90S =2,200......  ....(2)

 

Now you have 2 simultaneous equations. Can you solve them?

 Aug 3, 2020

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