Please help with is Math page

Question

2-5 Percent of Change:

Find the percent of change. Round to the nearest whole percent if necessary. State whether the percent of

change is an increase or a decrease.

2. 100 acres to 140 acres

3. $15.60 to $11.70

4. 125 centimeters to 87.5 centimeters

5. 1.6 hours to 0.95 hour

6. 132 days to 125.4 days

Be Precise Find the percent error.

7. Each week, Mr. Jones goes to the grocery store. Mr. Jones estimates that he will spend $120 when he goes to the

grocery store this week. He actually spends $94.

8. Marcus estimates that 230 people will attend the choir concert. There was an actual total of 300 people who attended

the choir concert.

Find the percent of change for the situation. Round to the nearest whole percent if necessary. State

whether the percent of change is an increase or a decrease.

9. Three months ago, Santos could walk 2 miles in 40 minutes. Today he can walk 2 miles in 25 minutes.

10. Last school year the enrollment of Genoa Middle School was 465 students. This year the enrollment is 525.

Answer 1

2 100 to 140 acres is a 40% increas

(140-100)/100 = 40/100 = .40 = 40%

(new amount minus old amount) divided by old amount = the decimal. then multiply by 100 to get the percent