Question

To decorate a cake, you make a shade of green icing using 3

3
drops of yellow food coloring for every 4
4
drops of blue food coloring. If you use 12
12
drops of yellow food coloring, how many drops of blue food coloring would you need?

Answer 1

the answer has to be 16

Answer 2

You would need 16 drops of blue food coloring. The ratio of yellow to blue food coloring is 3:4. If you divide 12 by 3, you get 4. This means you must multiply the base amount of blue food coloring (4 drops) by 4 to get your answer.