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26 July, 17:21

Kelly makes $10 more per hour than her regular pay when she is working overtime. Yesterday, she worked 8 regular hours and 4 overtime hours and earned $160.

What is Kelly's regular pay per hour?

20

10

12

16

+3
Answers (2)
  1. 26 July, 18:54
    0
    Let x be Kelly's regular pay

    Her pay for the day can be modelled by the equation 8x + 4 (x + 10) = 160

    Solve for x

    8x + 4x + 40 = 160

    8x + 4x = 160 - 40

    12x = 120

    x = 10

    Kelly's regular pay per hour is $10
  2. 26 July, 20:50
    0
    4 overtime hours - regular pay + $40

    Total $ earned - $160

    Total hours - 12 hours (8 reg + 4 overtime)

    $160 - $40 = $120

    $120/12 = $10

    Her regular pay is $10 per hour.
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