kob3965
23.03.2021 •
Mathematics
Match each expression to make pairs of equivalent expressions. 1/a^6(b^4), a^6/b^4, a^6/b^6, b^3/a^5, a^6/b^5, b^6/a^5, b^6/a^6, a^5b^3, b^6/a^5
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Ответ:
12 gallons of 20% salt solution
Step-by-step explanation:
Let
x > the number of gallons of 20% salt solution
we know that
20%=20/100=0.20
40%=40/100=0.40
25%=25/100=0.25
so
0.20(x)+0.40(4)=0.25(x+4)
Solve for x
0.20x+1.60=0.25x+1
0.25x-0.20x=1.60-1
0.05x=0.60
x=12 gallons