Question

Grace budgets 25% of her income for recreation. What is the measure ofthe central angle she must use to show this item on a circle graph?a. 120b. 90c. 25d. 45

Answer 1

Recall that a full turn has 360°, therefore, to answer this question, we have to compute the 25% of 360.

Now, to compute the x% of y, we can use the following expression:

`(x)/(100)* y\text{.}`

Using the above expression, we get that the 25% of 360 is:

`360*(25)/(100)=90.`

Answer:

`90.`