# Solutions, mixtures

How many liters of 70% solution we must add to 5 liters of 30% solution to give us a 60% solution?

Correct result:

x =  15 l

#### Solution:

x • 0.70 + 5• 0.30 = 0.60 • (x+5)

0.1x = 1.5

x = 15

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