How much of a 10% acidic solution should be mixed with a 20% acidic solution to obtain 100 Liters of a 18% acidic solution?

Question

How much of a 10% acidic solution should be mixed with a 20% acidic

solution to obtain 100 Liters of a 18% acidic solution?

How much of a 10% acidic solution should be mixed with a 20% acidic

solution to obtain 100 Liters of a 18% acidic solution?

Answer 1

Let x = the amount of 10% acidic solution

100 = the amount of 20% acidic solution

x+100 = Total amount of 18% acidic solution

The verbal model is:

10% solution + 20% solution = 18% solution

Plugging in what we know into the equation:

0.1(x)+0.2(100) = 0.18(100+x)

Are you able to solve the equation?