The chemist used 36 liters of 20% solution, 18 liters of 35 % solution, and 54 liters of 55 % solution.
<h3>What is an
equation?</h3>
An equation is an expression showing the relationship between two or more numbers and variables.
Let x represent the amount of 20% acid, y represent the 35% acid and z represent the 55% acid.
She created 108 liters of a 40 % acid mixture, hence:
x + y + z = 108 (1)
And:
0.2x + 0.35y + 0.55z = 0.4(108) (2)
55 % solution used is 3 times the number of liters of 35 % solution used. Hence:
z = 3y (3)
From the 3 equations:
x = 36, y = 18 and z = 54
The chemist created 108 liters of a 40% acid mixture
Find out more on equation at: brainly.com/question/2972832
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