Question 912650
Let x = full capacity of the tank (in gallons)


The tank is currently 33.3% full, so it is 0.333x gallons full.


Add 3 more gallons to get 0.333x + 3


Set this equal to 0.5x because this represents 50% full capacity


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0.333x + 3 = 0.5x


3 = 0.5x - 0.333x


3 = 0.167x


0.167x = 3


x = 3/0.167


x = 17.9640718562874


If we round to the nearest gallon, we get 18 gallons. So the tank is roughly 18 gallons. This is an overestimate if you use 33.3% but an exact measurement if you use 33 1/3%


Either way, I'd say the full capacity of the tank is <font size=5 color="red">18 gallons</font>.



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Thanks,


Jim