Geometry and Percent Problems

The measure of the angles of a quadrilateral is 56⁰, 131⁰ and 104⁰, find the measure of the missing angle.

• 63⁰

• 65⁰

• 67⁰

• 69⁰

How many sides does a regular polygon have if the measure of an exterior angle is 40°?

• 8

• 9

• 10

• 11

Susan drew a regular dodecagon and measured one of its interior angles. She got 150°. What is the sum of the measure of the interior angles of this regular polygon?

• 1080°

• 1180°

• 1800°

• 2180°

What is the sum of exterior angles of a polygon?

• 90°

• 180°

• 360°

• 540°

Out of the 420 senior high school students, 84 will not attend the graduation ball. What percent of the graduating class will attend the ball?

• 20%

• 40%

• 60%

• 80%

After an aerobics exercise, Elsa's pulse rate increased from 70 beats per minute to 98 beats per minute. What is the percent of increase?

• 20%

• 30%

• 40%

• 50%

Last year, 420 students attended the Junior-Senior Prom. If only 399 students attended the Prom this year, what is the percent decrease in attendance at the Junior- Senior Prom?

• 3%

• 5%

• 7%

• 9%

Marie earns a 10% commission on all sales. If she sells Php30,000 worth of products, how much commission will she earn?

• Php1000

• Php2500

• Php3000

• Php5000

A blouse originally priced at Php500 is on sale for 20% off. What is the sale price of the Shirt?

• Php400

• Php300

• Php200

• Php100

A jag pants costs Php1500.If the sales tax rate is 10%, what is the total cost of the jag pants?

• Php1550

• Php1650

• Php1750

• Php1950