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Algebra
Pregunta

A chemical company makes two brands of antifreeze....

A chemical company makes two brands of antifreeze. The first brand is \( 20 \% \) pure antifreeze, and the second brand is \( 70 \% \) pure antifreeze. In order to obtain \( 30 \) gallons of a mixture that contains \( 65 \% \) pure antifreeze, how many gallons of each brand of antifreeze must be used? 

Answer

3

27

Solución
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