How many gallons of a 6% salt solution must be mixed with 10 gallons of a 8% solution to obtain a 7% solution?
Let x denote Gallon. So, gallons of a 6% salt solution are calculated as (x gal) (6%).
10 gallons of an 8% solution is calculated as (10 gal) (8%).
Total of 7% of solution is calculated as (10+x...
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