Percentage Calculations and Increases

The video tutorial covers the concepts of percent increase and decrease through various examples and exercises. It begins with an introduction using a jewelry example, followed by exercises involving trading cards and investment values. The tutorial also includes discussions on percent decrease with real-life scenarios like sales and calorie intake. Examples of scout badges and cat population illustrate finding original amounts given percent changes. The video concludes with a summary of the key concepts.

What is the percentage of one ring in Cassandra's collection if she has five rings in total?

• 20%

• 50%

• 10%

• 25%

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

• 15%

• 25%

• 20%

• 10%

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

• 20%

• 25%

• 33.33%

• 50%

If a sales representative offers a 10% discount, what percentage of the original price do you pay?

• 85%

• 80%

• 90%

• 95%

Ken reduced his calorie intake from 2500 to 2200. Did he reduce it by more than 7%?

• Yes, he reduced by more than 7%

• Yes, he reduced by exactly 7%

• No, he reduced by less than 7%

• No, he reduced by exactly 7%

If an investment decreases by 10% from $75, what is the new value?

• $67.50

• $70.00

• $72.50

• $65.00

Justin wants to increase his badge count from 8 to 10. What is the percentage increase?

• 35%

• 30%

• 20%

• 25%

If the cat population decreased by 30% to 12, what was the original population?

• 18

• 16

• 15

• 17

Lou's test score increased by 25% to 650. What was her previous score?

• 530

• 520

• 540

• 500

If Mary has 20% more money than John, what is the whole unit in this context?

• The total money

• John's money

• Mary's money

• The difference in money