The answer is 7.68.
Hope this helps.
Answer:
36 hours
Step-by-step explanation:
20+16= 36
0+6=6
10+20=30
You can plug in values into the equation to see which one makes it true
x=3
7+18=16+9
25=25
C. 3
Answer:
b=9.
Step-by-step explanation:
Since 25% is smack in the middle between 20% and 30%, it will take equal volumes of ech to make a 25% solution.
Since 4 gallons of 30% solution was used, so 4 gallons of 20% solution will be needed.