Percentage Increase and Decrease Problems

The video tutorial covers solving problems involving percent increase and decrease. It includes exercises like Cassandra's jewelry box, John's trading card collection, and Ken's calorie reduction. The tutorial explains concepts like 10% off billing and Lou's test score improvement, emphasizing understanding percent changes in various contexts.

If Cassandra receives one more ring for her birthday, what will be the percentage increase in her collection?

• 20%

• 30%

• 25%

• 10%

John's trading card collection increased by 5 cards from an original 15 cards. What is the percentage increase?

• 33.3%

• 20%

• 25%

• 30%

If John had increased his collection by just one card instead of five, what would the percentage increase be?

• 5%

• 6.6%

• 10%

• 15%

What does a 10% discount on a bill imply?

• You pay 10% of the bill

• You pay 90% of the bill

• You pay 100% of the bill

• You pay 80% of the bill

If a bill is $40 and you get a 10% discount, what is the new bill amount?

• $36

• $38

• $34

• $32

Ken reduced his calorie intake from 2500 to 2200 calories. What is the percentage decrease?

• 18%

• 12%

• 10%

• 15%

What is the maximum percentage Ken should reduce his calorie intake by, according to his trainer?

• 5%

• 7%

• 6%

• 8%

Lou's 7th-grade math score was 650, which was a 25% increase from her 6th-grade score. What was her 6th-grade score?

• 500

• 525

• 530

• 520

Mary has 20% more money than John. If John has $100, how much does Mary have?

• $120

• $115

• $125

• $110

Ann has 15% less money than John. If John has $100, how much does Ann have?

• $85

• $90

• $95

• $100