gracemcintosh5 gracemcintosh5

20-09-2022
Mathematics

contestada

.How many gallons of hydrochloric acid must be added to
12 gallons of a 30% solution to obtain a 40% solution

Respuesta :

hellokittyfan123 hellokittyfan123

20-09-2022

Answer:

5.6

Step-by-step explanation:

.30*12+x=.40(12+x)

3.6+x=4.8+.40x

x-.40x=4.8-3.6

.6x=1.2

x=1.2/.6

x=2 gallons of acid needs to be added.

Proof:

.30*12+2=.4(12+2)

3.6+2=.4*14

5.6=5.6

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