Percent Increase and Decrease Story Problems

Ann works in a supermarket for $10.00 per hour. She received a raise to $12.00. What is the percent of change in her hourly wage?

• Increase 16.67%

• Decrease 16.67%

• Increase 20%

• Decrease 20%

A grocery store has a 20% markup on bottle of soda.  The bottle of soda costs the store $1.25. Find the selling price. Round to nearest cent if necessary.

• $1.5

• $1.50

• $.25

• $1.45

Mark spent $ 178 on groceries last month. If he reduces his grocery costs by 15% next month, how much will he spend on groceries?

• $ 204.70

• $ 151.30

• $ 124.60

• $ 26.70

Yesterday, Mrs. Dusterhoft had 70 tests to grade. Today she has 21 tests to grade. By what percentage did the number of tests she has to grade decrease?

• 60%

• 70%

• 30%

• 231%

Find the new amount.

52 companies; 25% increase

• 13

• 39

• 65

• 77

Find the new amount.

710 points; 10% increase

• 71

• 639

• 781

• 720

Find the percent of change

From 126 ounces to 48 ounces.

• 162% increase

• 162% decrease

• 62% increase

• 62% decrease

Find the percent of change.

From 84 seconds to 8 seconds.

• 950% decrease

• 950% increase

• 90 percent decrease

• 90 percent increase

What is the percent increase represented by this tape diagram?

A shoe sales associate earned $300 in August. In September she earned 8% more than she did in August. How much did she earn in September? 

• $164

• $256

• $404

• $324