Question

The ratio of whole milk bottles to skim milk bottles at the dairy was 3 to 7. If there were 210 bottles of skim milk, how many bottles of whole milk were there?

Answer 1

Given:

The ratio of whole milk bottles to skim milk bottles is,

`3\colon7`

There are 210 bottles of skim milk.

let x be the number of bottles of whole milk.

`\begin{gathered} 3\colon7=x\colon210 \\ (3)/(7)=(x)/(210) \\ x=(3*210)/(7) \\ x=3*30 \\ x=90 \end{gathered}`

Answer: There are 90 bottles of whole milk.