Fertilizer must be mixed with water in a 1:4 ratio. If you use 3

cups of fertilizer how much water do you need?

12

Step-by-step explanation:

1:4 = 3:12

12 cups of water

Step-by-step explanation:

The ratio of fertilizer is 1. To get to 3 you times it by 3. Therefore to find how much water you need you'd have to do the same to the other side of the ratio, times it by three. So it would be 3:12