Percentage Calculations and Word Problems

The video tutorial by Mr. Woolley focuses on understanding and solving percent problems. It covers the concepts of parts, wholes, and percents, and demonstrates how to solve these problems using proportional relationships and algebraic methods. The tutorial includes practical examples and emphasizes the importance of understanding the relationship between parts and wholes in percent calculations.

If 15 is what percent of 90, what is the whole unit in this scenario?

• 90

• 75

• 15

• 105

In a problem where 40% of students love the museum, if 20 students love it, how many students are on the trip?

• 20

• 40

• 60

• 50

If 20% of students earned an A in a class of 30, how many students got an A?

• 5

• 8

• 7

• 6

In Ty's art class, 12% of projects received a perfect score. If 25 projects were submitted, how many got a perfect score?

• 2

• 5

• 3

• 4

What is the algebraic expression to find the number of red candies if 28% of 300 candies are red?

• 300 * 28

• 300 / 0.28

• 28 * 300

• 0.28 * 300

If 28% of candies are red, what percentage are not red?

• 72%

• 28%

• 100%

• 50%

Zoe inflated 24 balloons, which is 15% of the total. How many balloons are there in total?

• 160

• 150

• 130

• 140

If Haley has made 112 out of 320 tickets, what percent of the tickets has she made?

• 35%

• 40%

• 50%

• 45%

What number is 75% of 220?

• 175

• 180

• 165

• 150

63 is what percent of 90?

• 80%

• 70%

• 90%

• 60%