SOLUTION: Jeremy's Graphics uses one cleanser that is 25% acid and a second that is 50% acid. How many liters of each must be mixed together to produce 10 liters that is 40% acid?

Question 863819: Jeremy's Graphics uses one cleanser that is 25% acid and a second that is 50% acid. How many liters of each must be mixed together to produce 10 liters that is 40% acid?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Jeremy's Graphics uses one cleanser that is 25% acid and a second that is 50% acid. How many liters of each must be mixed together to produce 10 liters that is 40% acid?
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Quantity Eq:: t + f = 10 liters
Acid Eq::::: 25t+50f = 45*10
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Modify for elimination::
25t + 25f = 250
25t + 50f = 450
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25f = 200
f = 8 liters (amt. of 50% solution needed)
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Solve for "t":
t + f = 10
t + 8 = 10
t = 2 liters (amt of 25% solution needed)
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Cheers,
Stan H.
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