How many liters...

Question

How many liters of a 79% glycol solution must be added to 72 liters of a 34% glycol solution to get a 63% glycol solution?

Answer 1

.79x+.34(72)=.63(72+x)

 

 .79x + 24.48 = 45.36+.63x

 

Now solve algebraically. 

 

You get x's on one side and numbers on the other.

 

.79x-.63x=45.36-24.48

 

.16x=20.88

 

x=20.88/.16

 

x=130.5 Liters