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9 April, 19:47

Suppose 12 quarts of pure antifreeze is mixed with 8 quarts of a solution that is 72% antifreeze. Answer the questions below. Do not do any rounding.

(a) How many quarts of antifreeze are in the resulting mixture? quarts

(b) What percentage of the resulting mixture is antifreeze? %

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Answers (1)
  1. 9 April, 20:08
    0
    (a)

    12+0.72 (8)

    12+5.76

    17.76 qts of antifreeze

    (b)

    100 (12+8 (.72)) / (12+8)

    100 (12+5.76) / 20

    100 (17.76) / 20

    5 (17.76)

    88.8%
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