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Posted by on Thursday, January 28, 2010 at 2:33pm.

Translate the problem into a pair of linear equations in two variables. Solve the equations using either elimination or substitution. State your answer for both variables.
An orchard operator must dilute 11 quarts of a 60% insecticide solution by adding water. Hpw many quarts of water should be added to get a mixture that is 2% insecticide?

  • College Algebra - , Thursday, January 28, 2010 at 3:02pm

    The amount of insecticide remains the same, but the diluted volume changes.

    Insecticide orig= Insecticide final
    11*.60=(11+X).02
    solve for x, the quarts of water that have to be added.

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