Understanding Percent Problems

The video tutorial introduces percent problems, often seen as word problems, and demonstrates how to solve them using a specific formula. The instructor provides two examples: calculating 20% of 500 and determining what percent 12 is of 8. The formula 'is over of equals percent over 100' is explained and applied in both examples. The tutorial emphasizes understanding the placement of variables in the formula and using cross products to find solutions.

What is the main topic discussed in the video?

• Statistics

• Geometry

• Percent problems

• Algebraic equations

Which formula is used to solve percent problems?

• F = ma

• E = mc^2

• is over of = per over 100

• a^2 + b^2 = c^2

In the first example, what is 20% of 500?

• 20

• 10

• 100

• 50

What is the key rule to remember when solving percent problems?

• Identify the variable as is, of, or percentage

• Divide by 2

• Use the quadratic formula

• Always multiply by 10

In the second example, what percent is 12 of 8?

• 150%

• 100%

• 125%

• 75%

What is the first step in solving the second example?

• Multiply 12 by 8

• Replace 'is' with 12 and 'of' with 8

• Divide 12 by 8

• Add 12 and 8

What operation is performed after setting up the proportion in the second example?

• Cross multiplication

• Subtraction

• Addition

• Division

What is the final result of the second example?

• 12 is 100% of 8

• 12 is 150% of 8

• 12 is 200% of 8

• 12 is 50% of 8

What is the concluding advice given in the video?

• Stick with the formula for accurate results

• Always use a calculator

• Practice daily

• Memorize all math formulas