Finding Parts in Percent Problems with Proportions

What are the three key components in a basic percent problem?

• Part, Whole, and Fraction

• Part, Whole, and Percent

• Whole, Percent, and Ratio

• Part, Fraction, and Ratio

In the example problem, what percentage of students got an A?

• 75%

• 30%

• 50%

• 25%

How many students were in the algebra class in the example problem?

• 30

• 25

• 35

• 20

What is the first step in solving a percent problem using proportions?

• Multiply the whole by the percent

• Subtract the part from the whole

• Divide the part by the whole

• Set up a proportion with the part over the whole and the percent over 100

What is the trick mentioned for solving proportions without writing an equation?

• Using a calculator

• Guessing the answer

• Making a chart and filling in the numbers

• Using a different formula

How do you find the part in a percent problem once the proportion is set up?

• Divide the numbers across from each other and multiply by the remaining number

• Add the numbers across from each other

• Subtract the numbers across from each other

• Multiply the numbers across from each other and divide by the remaining number

In the second example, what percentage of Tim's day is spent at work?

• 50%

• 40%

• 60%

• 30%

How many hours are in a day, which is used as the whole in the second example?

• 12

• 18

• 30

• 24

What is the result of multiplying 24 by 40 in the second example?

• 840

• 720

• 600

• 960

What is the final step in solving a percent problem using proportions?

• Subtracting the percent from 100

• Dividing the product by 100

• Adding the part and the whole

• Multiplying the part by the whole