12 gallons of water fill a tank to 3/4 capacity. if the tank is then filled to capacity, how many half-gallon bottles con be filled with the water in the tank?

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.

1. 8

2. 9

3. 20

4. 3

5. 17

6. 2.2

7. 11.25

8. 1

9. 14

10. 2

step-by-step explanation:

thats the first half

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional