Question

At a bake sale there were 72 raisin cookies sold. If the ratio of raisin cookies sold to oatmeal cookies sold was 9:1, what is the combined amount of raisin and oatmeal cookies sold?

Answer 1

Answer: The combined amount of raisin and oatmeal cookies sold=80.

Explanation:

Let x be the combined amount of raisin and oatmeal cookies sold

Given:-

Amount of raisin cookies sold=72

The ratio of raisin cookies sold to oatmeal cookies sold = 9:1

Thus Amount of raisin cookies sold =
`(9)/(1+9)*\ x=72\\\\\Rightarrow(9)/(10)*\ x=72\\\\\Rightarrow\ x=72*(10)/(9)\\\\\Rightarrow\ x=80`

Therefore, the combined amount of raisin and oatmeal cookies sold=80.