Calculating Simple Interest and Percentages

This video tutorial covers solving percent problems using two methods: the percent proportion and the percent equation. It explains how to apply these methods to real-world scenarios, such as calculating discounts and simple interest. The tutorial also provides practice problems to reinforce understanding.

What are the two methods introduced for solving percent problems?

• Using graphs and tables

• Using proportions and equations

• Using statistics and probability

• Using calculus and algebra

In the percent proportion method, what does 'a over B' represent?

• Base over part

• Base over percent

• Percent over base

• Part over base

How do you calculate the percent in a percent proportion problem?

• Add the part and base

• Subtract the base from the part

• Divide the part by the base and multiply by 100

• Multiply the base by 100

What is the percent equation used for?

• To find the base

• To find the part

• To find the percent

• To find the total

In the percent equation, what does 'a' represent?

• The total

• The part

• The percent

• The base

How do you convert a decimal to a percent in the percent equation method?

• Divide by 100

• Multiply by 100

• Add 100

• Subtract 100

What is the sale price of a shirt originally costing $38.50 with a 30% discount?

• $26.95

• $11.55

• $38.50

• $30.00

If a car is sold for 60% less than its original price of $9,000, what is the selling price?

• $3,600

• $6,000

• $9,000

• $5,400

What is simple interest?

• Interest on the base and part

• Interest on the total amount

• Interest only on the principal

• Interest on the principal and accumulated interest

How is simple interest calculated?

• Principal times rate times time

• Principal minus rate minus time

• Principal divided by rate times time

• Principal plus rate plus time