Percentage Problems and Applications

The video tutorial covers the concept of percentages, focusing on identifying the whole, part, and percentage in various scenarios. It provides examples and exercises to help students understand and solve percentage problems. The lesson emphasizes the formula: whole times percentage equals part, and the importance of converting percentages to decimals for calculations. Students are encouraged to practice with exercises and are given homework to reinforce learning.

What is the whole unit if 15 is what percent of 90?

• 15

• 75

• 90

• 105

In the scenario where 10% of 56 is considered, which number represents the whole?

• 50

• 10

• 56

• 5.6

If 90% of a number is 180, what is the whole number?

• 180

• 200

• 220

• 160

A bag contains 300 pieces of candy, and 25% are red. How many pieces are red?

• 75

• 25

• 50

• 100

If 40% of students on a field trip love the museum and there are 20 students, how many love the museum?

• 20

• 16

• 12

• 8

In Ty's math class, 20% of students earned an A. If there are 30 students, how many got an A?

• 7

• 8

• 5

• 6

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

• 2

• 3

• 5

• 4

In Ty's English class, 70% of students completed an essay. If there are 30 students, how many completed it?

• 21

• 19

• 20

• 18

A bag of candy contains 300 pieces, and 28% are red. How many pieces are red?

• 90

• 84

• 86

• 88

What is the key formula to remember when solving percentage problems?

• Whole x Percentage = Part

• Whole / Percentage = Part

• Whole - Percentage = Part

• Whole + Percentage = Part