Question

Aaron has peaches and grapefruits in a ratio of 90:190. How many grapefruits doeshe have if he has 9 peaches?On the double number line below, fill in the given values, then use multiplication ordivision to find the missing value.

Answer 1

You know the following information that the ratio of peaches to grapefruits is:

$90\colon190$

This ratio can be also written as:

$\frac{90}{190}$

You know that you must find the number of grapefruits if Aaron has 9 peaches. Then, you can fill in the following values on the double number line:

- Knowing the ratio, you need to write the corresponding value for grapefruits (190) on the first line and the corresponding value for the peaches (90) on the second line.

- Since you know that can have 9 peaches, write this value on the line that represents the number of peaches (on the square).

- Notice that:

$\frac{90}{9}=10$

Then, you can determine the shown in the picture:

The answer is:

Aaron has 19 grapefruits if he has 9 peaches.