How many liters of 10% acid solution should be mixed with 30 liters of a 50% acid solution to get a mix that a 20% acid?

90 liters of 10% acid solution should be mixed with 30 liters of a 50% acid solution to get a mix that is 20% acid

An equation is used to show the relationship between two or more variables and numbers.

Let x represent the amount of acid solution in liters. Hence:

(x * 10%) + (30 * 50%) = (x + 30) * 20%

0.1x + 15 = 0.2x + 6

0.1x = 9

x = 90 liters

90 liters of 10% acid solution should be mixed with 30 liters of a 50% acid solution to get a mix that is 20% acid

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$5.41

step-by-step explanation:

$20 - $14.51 = $5.49.