We need to find out how many gallons will fill the whole tank
we first write 3/4 into its decimal fraction. 3/4 = 0.75.
Now we form an equation
0.75 = 12
1 = x (where x is he number of gallons needed to fill whole tank)
Simplify the equation:
0.75 × x = 12 × 1
0.75x = 12
x = 12 / 0.75
x = 16
It will take 16 gallons to fill whole tank to capacity.
Half gallon bottles that can be filled from the tank are:16 x 2 = 32
So 32 half gallon bottles can be filled from the full tank.