SOLUTION: Archie’s gas tank is 1 / 3 full . If Archie adds 3 gallons of gas to the tank, it will be ˝ full . What is thecapacity in gallons of Archie’s tank?

Algebra ->  Numeric Fractions Calculators, Lesson and Practice -> SOLUTION: Archie’s gas tank is 1 / 3 full . If Archie adds 3 gallons of gas to the tank, it will be ˝ full . What is thecapacity in gallons of Archie’s tank?       Log On


   

Question 841304: Archie’s gas tank is
1
/
3
full
.
If Archie adds 3 gallons of gas to the tank, it will be
˝
full
.
What is thecapacity in gallons of Archie’s tank?
Answer by hamsanash1981@gmail.com(151) About Me  (Show Source):
You can put this solution on YOUR website!
Let the total gallons to fill the tank be x
when 3 gallons of gas added to 1/3 of x it becomes 1/2 of x
=> x/3+3 = x/2
=> (x+9)/3 = x/2
=> 2x+18 = 3x
=> x=18
The capacity of the tank in gallons is 18.