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General Jay
General Jay, Problem Solver
Category: General
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Experience:  General contractor, project manager, excellent problem solving skills, retired professional athlete.
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How much pure antifreeze must be added to 12 gallons of 10%

Customer Question

How much pure antifreeze must be added to 12 gallons of 10% antifreeze to make a 50% antifreeze solution?
14 gallons
19 gallons
5 gallons
9.6 gallons
Submitted: 5 years ago.
Category: General
Expert:  General Jay replied 5 years ago.
Thank you for using Just Answer!

(0.10 x 12) + 1.00 y = .5 (12 + y)

1.2 + 1.00 y = 6 + .5 y

.5 y = 4.8

y = 9.6 gallons

The answer is D

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