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How many grams of a 15 percent alcohol solution should be mixed with 40 grams of a 30 percent solution to obtain a
solution that is 25 percent alcohol?
A-.10
B-.15
C-.20
D-.25

How many grams of a 15 percent alcohol solution should be mixed with 40 grams of a 30 percent solution to obtain a solution that is 25 percent alcohol A10 B15 C class=

Respuesta :

abiolataiwo2015

The number of  grams is 20 grams

Let x represent how  many grams of a 15 percent alcohol solution

First step

15%x+30%.40/x+40=25%

Second step

0.15x+0.4.30=0.25 (x+40)

Simplify

0.15x+12=0.25x+10

0.15x-0.25x=10+12

-0.1x=-2

Divide both side by -0.1

x=-2/-0.1

x=2

Inconclusion The number of  grams is  20 grams

Learn more here:

brainly.com/question/24750329

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