Review of Percent, Percent Change, Interest

The original quantity is 15, the new quantity is 18. Is this a percent increase or decrease and what is the percent change? YOU WILL CHOOSE 2 OPTIONS.

• increase

• decrease

• 2%

• 20%

• 17%

To find simple​ interest, you multiply the principal​ (in dollars), the interest rate​ (as a​ decimal), and the time in years. The equation 6.40=200•0.016•2 shows how to find the simple interest for a certain account after 2 years. What is the interest rate​ (as a​ percent)?

• 6.40%

• 200%

• 0.016%

• 1.6%

• 2%

To find simple​ interest, you multiply the principal​ (in dollars), the interest rate​ (as a​ decimal), and the time in years. The equation 6.40=200•0.016•2 shows how to find the simple interest for a certain account after 2 years. How much is the simple interest?

• $6.40

• $1.60

• $0.016

• $200

• $2

Write 11/25 as a percent

• 11%
• 44%
• 22%
• 55%

0.1 as a percent

• 1%
• 10%
• 100%
• 1/10

What number is 20% of 45?

• 9

• 90

• 4.4

• 7

What percent of 500 is 25?

• 50%

• 125%

• 5%

• 0.05%

90 is 120% of what number?

• 108

• 75

• 118

• 55

Kathy buys a shirt that costs $8.25.  If the sales tax where Kathy lives is 7.5% what is the total cost of Kathy's shirt?

• $8.87
• $8.25
• $8.85
• $8.26

Ms. Scott receives a basket of apples at her door every Friday morning.  Last Friday, there were 5 apples in the basket.  This Friday, there were 8 apples in the basket.  What is the percent of increase in the number of apples in the basket?

• 38%
• 63%
• 60%
• 167%