SOLUTION: A fish tank is half full. When 9 gallons are added, the tank is 7/8 full. What is the capacity of the fish tank?

Algebra ->  Numeric Fractions Calculators, Lesson and Practice -> SOLUTION: A fish tank is half full. When 9 gallons are added, the tank is 7/8 full. What is the capacity of the fish tank?      Log On


   

Question 225441: A fish tank is half full. When 9 gallons are added, the tank is 7/8 full. What is the capacity of the fish tank?
Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
When the tank is full it will hold f gallons.
f/2 + 9 = 7f/8
4f+72=7f multiply each side by 8 (LCM).
3f=72
f=24 gal.
.
Ed