Warm up

• 1. What percent of 400 is 60?• 2. Solve 1.3x = 65

Lesson 7-6 Percent Problems

Objective: To solve problems involving percents.

Percent Change

priceoriginal

priceinchangechangepercent

100

Example

• Gabrielle originally paid $6500 for a car 3 years ago. The same car costs $7400 today. What is the change in price? What is the % change?– Change in price 7400 – 6500 = 900– % change :

x= 13.8% 6500

900

100

x

• The Fergusons' real estate taxes went from $1560 to $1638. What was the percent of increase?

• The number of registered voters in Franklin increased by 14% over last year. There are now 9633 registered voters. How many were there last year?

• John has $8000 invested in stocks that give him a total annual income of $550. If part of the stocks pay 8% a year and the remainder of the stocks pay 6.5% a year, how much money is invested in the stocks at each rate?

• .08x + .065(8000-x) =550

Amount Rate Income

8% x 0.08 .08x

6.5% 8000-x 0.065 .065(8000-x)