How many liters of a 60% acid...

Problema Solution

How many liters of a 60% acid solution must be mixed with a 75% acid solution to get 20 L of a 72% solution?

First set up the inaquality:

0.60x+0.75y = 0.72(20)

x+y=20

Then solve

The answer is

y=16

x=4

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