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.

Question

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?

Answer 1

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.