<PRE><B>Question 937359</B>
volume of used paint:
u = 3*0.20 + 10*0.80
u = 8.6 liters
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a) percent of total paint volume used:
8.6/(3+10) * 100 = 66.1538461538 %
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b) percent of total paint volume remaining:
(3+10-8.6)/(3+10) * 100 = 33.8461538462 %
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check:
66.1538461538 + 33.8461538462 = 100 %
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