Sheet # 90 Critical Thinking
Name: _____________________ Date_____________
Use drawings, words, or numbers to explain how you got your answer.
A fish tank is half full of water. When 9 gallons are added, the tank is 7/8 full. What is the capacity of the tank?
Answers for sheet # 90
Capacity of the tank = c
(c/2) + 9 = (7/8) x c
If you solve this equation
c = 24 gallons
Answer for sheet # 90
Let C is the capacity of the tank.
Half full means = C/2
(C/2) + 9 = (7/8) x C
4C + 72 = 7C
3C = 72
C = 24 gallons