SOLUTION: How many liters of a 20% salt solution must be added to 42 L of a 38% salt solution to get a 28% salt solution?
Algebra.Com
Question 172267: How many liters of a 20% salt solution must be added to 42 L of a 38% salt solution to get a 28% salt solution?
Answer by Mathtut(3670) (Show Source): You can put this solution on YOUR website!
let x be the amount of 20% solution
:
.2x+.38(42)=.28(x+42)
:
.2x+15.96=.28x+11.76
:
.08x=4.2
:
liters of 20% solution
RELATED QUESTIONS
How many liters of a 20% salt solution must be added to 42L of a 38% salt solution to get (answered by nerdybill)
how many liters of a 12% salt solution must be added to 10 liters of a 25% salt solution... (answered by josgarithmetic)
How many liters of 20% salt solution must be added to 60 liters of 40% salt solution to... (answered by Earlsdon)
how many liters of 20% salt solution must be added to 72 liters of 59% salt solution to... (answered by alicealc)
Hom many liters of 20% salt solution must be added to 68 liters of 61% salt solution to... (answered by Fombitz)
How many liters of a 25% salt solution must be added to 20 liters of a 12% solution to... (answered by stanbon)
How many liters of a 60% salt solution must be added to 20 liters of a 12% salt solution... (answered by mangopeeler07)
How many liters of a 20% salt solution must be added to 30 liters of a 15% solution to... (answered by josgarithmetic)
How many Liters of a 12% salt solution must be mixed with 11 Liters of a 42% salt... (answered by nerdybill)