Question

to make plaster, kevin mixes 3 cups of water with 4 pounds of plaster powder. complete the ratio table. how much water will kevin mix with 20 pounds of powder? cups of water 3 pounds of powder 4 8 12

Explanation:

Step1: Find the ratio

The ratio of water to powder is $\frac{3}{4}$.

Step2: Calculate water for 8 pounds of powder

Multiply 8 by the ratio: $8\times\frac{3}{4}=6$.

Step3: Calculate water for 12 pounds of powder

Multiply 12 by the ratio: $12\times\frac{3}{4}=9$.

Step4: Calculate water for 16 pounds of powder

First, note the powder - increment is 4. For 16 pounds of powder ($4\times4$ pounds), multiply 16 by the ratio: $16\times\frac{3}{4}=12$.

Step5: Calculate water for 20 pounds of powder

Multiply 20 by the ratio: $20\times\frac{3}{4}=15$.

Answer:

Cups of Water	3	6	9	12	15

The amount of water for 20 pounds of powder is 15 cups.