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13 November, 05:58

two mechanics worked on a car. the first mechanic worked for 10 hours, and the second mechanic worked for 15 hours. together they charged a total of $2675. what was the rate charged per hour by each mechanic if the sum of the two rates was $210 per hour?

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Answers (2)
  1. 13 November, 06:00
    0
    The answer to your question is: rate charged by

    Mechanic 1 = $95

    Mechanic 2 = $ 115

    Step-by-step explanation:

    Data

    mechanic 1 = 10 hours = x

    mechanic 2 = 15 hours = y

    total charged = $2675

    rate charged per hour = ?

    sum of the two rates = $210

    Write equations

    x + y = 210 (I)

    10x + 15y = 2675 (II)

    Solve the equations by elimination

    Multiply I by - 10

    -10x - 10y = - 2100

    10x + 15y = 2675 Add the equations

    0 + 5y = 575 Find y

    y = 575/5

    y = $ 115 Mechanic 2

    Find x

    x + 115 = 210

    x = 210 - 115

    x = $95 Mechanic 1
  2. 13 November, 06:19
    0
    i think its 50
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