anonymous
  • anonymous
Two mechanics worked on a car. The first mechanic worked for 20 hours, and the second mechanic worked for 5 hours. Together they charged a total of $1725 . What was the rate charged per hour by each mechanic if the sum of the two rates was $120 per hour? Note that the ALEKS graphing calculator can be used to make computations easier
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
Let x be rate of charge for the first mechanic Let y be rate of charge for the second mechanic 20x+5y=1725 x+y=120 Know how to solve this system of equation?
anonymous
  • anonymous
could u help
anonymous
  • anonymous
With?

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anonymous
  • anonymous
solving it
anonymous
  • anonymous
First make both of them cancel by multiplying the second equation by -20? So what would be your 2nd equation?
anonymous
  • anonymous
You would want your x to cancel out to solve for y.
anonymous
  • anonymous
ok
anonymous
  • anonymous
Answer my question and I will proceed.
anonymous
  • anonymous
The reason is because this should not be new to you. This is harder example of a system of linear equation problem.

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