Answer:
Tank is 16 gallons, which will fill 32 half-gallon bottles.
Explanation:
Let x be the capacity of the tank.
We are told that 12 gallons of water will fill the tank, x, to 3/4 capacity. We can write that as:
12 gallons = (3/4)x
x = (4/3)*12 gallons
x = 16 gallons
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How many half - gallon bottles [0.5 gallon/bottle] can be filled if the tank is at capacity, 16 gallons?
16 gallons*(bottle/0.5 gallon) = 32 half - gallon bottles
Note that [0.5 gallon/bottle] is a conversion factor. We can invert it to [bottle/0.5 gallon] and it is still valid.