Question

For 5 cups of milk you need 4 cups of oatmeal, how many cups of oatmeal will be needed for 1 cup of milk?

Answer 1

The ratio milk-oatmeal has to stay the same; then, if x represents the cups of oatmeal we need for 1 cup of milk, we get:

`\begin{gathered} (5)/(4)=(1)/(x) \\ \Rightarrow x=(4\cdot1)/(5)=(4)/(5)=0.8 \end{gathered}`

The answer is 4/5 or 0.8 cups of oatmeal