hansen8031
29.01.2020 •
Mathematics
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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Ответ:
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%
Ответ: