Question

Question 3 Olivia is making pancakes for breakfast. The recipe calls for 0.5 quart of milk and 2.5 cups of flour. She has quart of 3/8 quart of milk and 18/8 cups of flour. Olivia makes the recipe with the milk and flour she has. Explain her error. Hint: Convert all of them to either decimal or fraction so that you can compare the values. Challenge: How much more or less milk does Olivia need? How much more or less flour does Olivia need?

Answer 1

ANSWER and EXPLANATION

The recipe calls for 0.5 quart of milk and 2.5 cups of flour.

She has 3/8 quart of milk and 18/8 cups of flour.

To know the error she made, we have to find the ratio of milk to flour in the recipe and the ratio of milk to flour that she used and see if the ratios are the same.

RECIPE

Ratio of milk to flour is:

`\begin{gathered} 0.5\text{ : 2.5} \\ \Rightarrow\text{ 1 : 5} \end{gathered}`

That is the ratio of milk to flour.

USED BY OLIVIA

Ratio of milk and flour that she used is:

`\begin{gathered} (3)/(8)\text{ : }(18)/(8) \\ =>\text{ 3 : 18} \\ \Rightarrow\text{ 1 : 6} \end{gathered}`

We can already see that the ratios are not the same.

By comparing the ratios, we see that she actually used more flour than she was supposed to.