SOLUTION: please help with this word problem
How many gallons of a 5% salt solution must be mixed with 60 gallons of a 9% solution to obtain a 7 % solution?
paint costing $ 18 pe
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How many gallons of a 5% salt solution must be mixed with 60 gallons of a 9% solution to obtain a 7 % solution?
paint costing $ 18 pe
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How many gallons of a 5% salt solution must be mixed with 60 gallons of a 9% solution to obtain a 7 % solution?
paint costing $ 18 per gallon is to be mixed with $ 4-per gallon thinner to make 14 gallons of a paint that can be sold for $12 per gallon. How much paint thinner should be used? Answer by checkley77(12844) (Show Source):
You can put this solution on YOUR website! .05x+.09*60=.07(x+60)
.05x+5.4=.07x+4.2
.05x-.07x=4.2-5.4
.02x=-1.2
x=-1.2/-.02
x=60 gallons of 5& salt is needed.
Proof:
.05*60+.09*60=.07(60+60)
3+5.4=.07*120
8.4=8.4
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