Devin volunteers at Big Pup Rescue. He is mixing up shampoo solution for the dog washing station. He needs 2 cups of shampoo concentrate for every 9 cups of water. Devin will use 36 cups of water. How much shampoo concentrate should Devin add to the water to make the shampoo solution?

cups of shampoo concentrate

8 Shampoo Concentrate

Step-by-step explanation:

There's a ratio of 9:2 so for every 9 cups of water there's two cups of shampoo concrete.

We'll need 9 multiplied by 4 is 36

so we need to multiply 2 with 4

4 multiplied by 2 is 8

8. is the answer

Step-by-step explanation:

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step-by-step explanation:

because i said it is

3: 2

step-by-step explanation:

shorter piece is 2: 3, so just reverse it, and you get 3: 2