SOLUTION: How many gallons of a 2% salt solution must be mixed with 30 gallons of a 7% solution to obtain a 5% solution?
0.02x + 30(0.07) = x-30(0.05)
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Question 345541: How many gallons of a 2% salt solution must be mixed with 30 gallons of a 7% solution to obtain a 5% solution?
0.02x + 30(0.07) = x-30(0.05)
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
The solution volumes add, not subtract, so the right hand side volume should be .
.
.
.
Multiply both sides by 100.
Now solve for .
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