Question

To decorate a cake, you make a shade of purple icing using 2 drops of red food coloring for every 3 drops of blue.

For 12 drops of red food coloring, how many drops of blue food coloring would you need?

Answer 1

you will Probably need a lot

Answer 2

18 drops

Explanation:

Make a proportion

We need 2 drops of red for every 3 drops of blue, and 12 drops of red needs x drops of blue

2/3=12/x

Cross multiply

2*x=3*12

2x=36

To solve for x, we need to get x by itself. It is being multiplied by 2. To undo this, divide both sides by 2. This is because the opposite of multiplication is division.

2x/2=36/2

x= 18

For 12 drops of red, 18 drops of blue are needed