Proportions and Percentages Problems

The video tutorial explains how to solve a proportion word problem involving jelly beans. It starts by breaking down the problem statement, where Brett eats 25% of his jelly beans and has 72 left. The tutorial sets up a proportion using fractions and variables, converting percentages to decimals. It then demonstrates solving the proportion through cross multiplication to find the number of jelly beans Brett originally had. The video concludes with a calculation of the total number of jelly beans and encourages viewers to explore additional resources.

What is the main topic of the video?

• Solving algebraic equations

• Understanding geometry

• Proportion word problem

• Calculating percentages

How many jelly beans did Brett have left after eating some?

• 96

• 72

• 50

• 25

What percentage of jelly beans did Brett eat?

• 50%

• 25%

• 75%

• 100%

What fraction represents the jelly beans Brett did not eat?

• 1/3

• 1/4

• 3/4

• 1/2

What is the decimal equivalent of 25%?

• 0.5

• 0.75

• 0.25

• 0.1

What is the decimal equivalent of 75%?

• 0.25

• 1.0

• 0.5

• 0.75

What mathematical operation is used to solve the proportion?

• Subtraction

• Addition

• Division

• Cross-multiplication

What is the result of 0.25 multiplied by 72?

• 18

• 24

• 36

• 72

What is the next step after cross-multiplying in solving the proportion?

• Convert to fractions

• Add the results

• Isolate the variable

• Multiply by 100

What operation is used to isolate the variable n?

• Addition

• Subtraction

• Multiplication

• Division