Splash Screen. Then/Now You have already solved real-world problems using the percent equations....
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Transcript of Splash Screen. Then/Now You have already solved real-world problems using the percent equations....
![Page 1: Splash Screen. Then/Now You have already solved real-world problems using the percent equations. (Lesson 7–5) Find percent of increase and decrease. Solve.](https://reader030.fdocuments.in/reader030/viewer/2022032703/56649f575503460f94c7c3e5/html5/thumbnails/1.jpg)
![Page 2: Splash Screen. Then/Now You have already solved real-world problems using the percent equations. (Lesson 7–5) Find percent of increase and decrease. Solve.](https://reader030.fdocuments.in/reader030/viewer/2022032703/56649f575503460f94c7c3e5/html5/thumbnails/2.jpg)
You have already solved real-world problems using the percent equations. (Lesson 7–5)
• Find percent of increase and decrease.
• Solve real-world problems involving markup and discount.
![Page 3: Splash Screen. Then/Now You have already solved real-world problems using the percent equations. (Lesson 7–5) Find percent of increase and decrease. Solve.](https://reader030.fdocuments.in/reader030/viewer/2022032703/56649f575503460f94c7c3e5/html5/thumbnails/3.jpg)
If the answer is positive, the percent of change is an increase.
If the answer is negative, the percent of change is a decrease.
![Page 4: Splash Screen. Then/Now You have already solved real-world problems using the percent equations. (Lesson 7–5) Find percent of increase and decrease. Solve.](https://reader030.fdocuments.in/reader030/viewer/2022032703/56649f575503460f94c7c3e5/html5/thumbnails/4.jpg)
Find the Percent of Change
Find the percent of change from 20 students to 24 students. State whether the percent of change is an increase or decrease.
Step 1 Subtract to find the amount of change.
24 – 20 = 4 final amount – original amount
Step 2 Write a ratio that compares the amount ofchange to the original amount. Express theratio as a percent.
![Page 5: Splash Screen. Then/Now You have already solved real-world problems using the percent equations. (Lesson 7–5) Find percent of increase and decrease. Solve.](https://reader030.fdocuments.in/reader030/viewer/2022032703/56649f575503460f94c7c3e5/html5/thumbnails/5.jpg)
Find the Percent of Change
Cross multiply.
Answer: 20%; increase
Step 3 The percent of change is positive, so it is a percent of increase.
4 • 100 = 20 • x
20% = x Divide.
![Page 6: Splash Screen. Then/Now You have already solved real-world problems using the percent equations. (Lesson 7–5) Find percent of increase and decrease. Solve.](https://reader030.fdocuments.in/reader030/viewer/2022032703/56649f575503460f94c7c3e5/html5/thumbnails/6.jpg)
A. –20%; decrease
B. –25%; decrease
C. 20%; increase
D. 25%; increase
What is the percent of change from 24 to 30 students?
![Page 7: Splash Screen. Then/Now You have already solved real-world problems using the percent equations. (Lesson 7–5) Find percent of increase and decrease. Solve.](https://reader030.fdocuments.in/reader030/viewer/2022032703/56649f575503460f94c7c3e5/html5/thumbnails/7.jpg)
A. –17.9%; decrease
B. –21.7%; decrease
C. 17.9%; increase
D. 21.7%; increase
John had $420 in his checking account at the beginning of May. At the beginning of June he had $345. What was the percent of increase or decrease to the nearest tenth?