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Katen [24]
4 years ago
10

You earn $8 an hour doing cleanups and $12 an hour painting. Last spring and summer, you worked a total of 400 hours and earned

$3,800. How many hours did you spend doing cleanups? How many hours did you spend painting?
Mathematics
1 answer:
juin [17]4 years ago
8 0

Answer:

  • 250 hours doing cleanups
  • 150 hours painting

Step-by-step explanation:

Let p represent the number of hours spent painting. Then the hours spent doing cleanups can be represented by 400-p, and total earnings are ...

  12p +8(400 -p) = 3800

  4p +3200 = 3800 . . . . . . simplify

  4p = 600 . . . . . . . . . . subtract 3200; next, divide by 4

  p = 150 . . . . . . . . . . . hours spent painting

  (400-p) = 250 . . . . . hours doing cleanups

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