8 / 12 will give u the amount per bottle
the answer to this is 0.666666667
Now multiply 0.666666667 by 15 to get your answer
your answer is 10
Let's build the equation counting how many x's and 1's are there on each side.
On the left hand side we have 5x's and 8 1's, for a total of 
On the left hand side we have 3x's and 10 1's, for a total of 
So, the equation we want to solve is

Subtract 3x from both sides:

Subtract 8 from both sides:

Divide both sides by 2:

Answer:
127
Step-by-step explanation: