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anonymous

  • one year ago

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

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  1. anonymous
    • one year ago
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    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?

  2. anonymous
    • one year ago
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    could u help

  3. anonymous
    • one year ago
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    With?

  4. anonymous
    • one year ago
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    solving it

  5. anonymous
    • one year ago
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    First make both of them cancel by multiplying the second equation by -20? So what would be your 2nd equation?

  6. anonymous
    • one year ago
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    You would want your x to cancel out to solve for y.

  7. anonymous
    • one year ago
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    ok

  8. anonymous
    • one year ago
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    Answer my question and I will proceed.

  9. anonymous
    • one year ago
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    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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