Answer:
8 cups of shampoo concentrate.
Explanation:
Set up a proportion and solve for x.
its 8
use ratio solution ..
2 shampoo : 9 water
8 shampoo : 36 water
9x4 = 36
same goes too shampoo.. it needs to be multiplied with 4 as to get 36 water u multiplied 9 with 4
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