SOLUTION: One third of tank is filled. If we add 3 liters, the tank become half. What is the total capacity of tank? plz help me how to solve this...........

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Question 815279: One third of tank is filled. If we add 3 liters, the tank become half. What is the total capacity of tank?
plz help me how to solve this...........
Answer by josgarithmetic(39838) About Me  (Show Source):
You can put this solution on YOUR website!
Let T = tank capacity.

T%2F2-T%2F3=3
The difference between half a tank and one-third of tank is 3 liters. We just do not know the tank volume.

T%281%2F2-1%2F3%29=3
T%281%2F6%29=3
T=3%2A6
T=18