SOLUTION: how many gallons of a 50% antifreeze solution must be mixed with 90 gallons of 25% antifreeze to get a mixture of 40% antifreeze
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Question 553942: how many gallons of a 50% antifreeze solution must be mixed with 90 gallons of 25% antifreeze to get a mixture of 40% antifreeze
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = gallons of 50% antifreeze needed
= gallons of antifreeze in 50% solution
given:
= gallons of antifreeze in 90% solution
(1)
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135 gallons of 50% antifreeze are needed
check answer:
(1)
(1)
(1)
(1)
OK
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