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## ASAP WILL MARK BRAINLIEST!!!!!!! A chemist needs to mix an 20% acid solution with a 50% acid solution to obtain 15 liters of a 34% ac

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ASAP WILL MARK BRAINLIEST!!!!!!!

A chemist needs to mix an 20% acid solution with a 50% acid solution to obtain 15 liters of a 34% acid solution. How many liters of each of the acid solutions must be used?

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Math
Lyla
2 weeks
2021-09-09T13:04:59+00:00
2021-09-09T13:04:59+00:00 2 Answers
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## Answers ( )

Answer:14Step-by-step explanation:Answer:Step-by-step explanation:We are mixing two acids.

x = liters of 20% acid solution

y = liters of 70% acid solution

x + y = 8 This represents the total number of liters

and

.2x + .7y = .5(8) This represents the concentration of the solutions

Since x+y=8, y = 8-x

We can use substitution.

.2x + .7(8-x) = 4

.2x + 5.6 – .7x = 4

Combining like terms

-0.5x = – 1.6

Dividing by -0.5

x = 3.2

There are 3.2 liters of the 20% solution to be mixed with 4.8 liters of the 70% solution.