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OpenStudy (anonymous):
A 20% acid solution is mixed with a 70% acid solution to get 50 liters of a 40% solution. Which of the following expressions is equal to 4(50)?
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OpenStudy (anonymous):
What are the expressions?
OpenStudy (anonymous):
0.2x + 0.7y 2x + 7y x + y
OpenStudy (anonymous):
ive never really understood these types of problems before
OpenStudy (anonymous):
@hihihii
OpenStudy (anonymous):
please help me
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hero (hero):
x = liters of 20% acid solution y = liters of 70% solution Total liters: x + y = 50 Total Percent of acid solution after combining: .20x + .70y = .40(50) Solve the system
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