Solving Percent Problems with Proportions

What is the standard formula used for solving percent problems using proportions?

• is / of = percent / 100

• is / percent = 100 / of

• percent / is = 100 / of

• of / is = 100 / percent

In the example, what number represents 'is' when finding what percent of 25 is 16?

• 64

• 25

• 16

• 100

What operation is performed to solve for 'X' in the equation 1600 = 25X?

• Division

• Multiplication

• Subtraction

• Addition

Tags

CCSS.HSA.REI.A.1

What is the value of 'X' when solving the equation 1600 = 25X?

• 16

• 25

• 64

• 100

In the second example, what percentage is used to find the unknown base?

• 14%

• 60%

• 23.3%

• 100%

What does the 'X' represent in the second example problem?

• The percentage

• The part

• The whole

• The product of 60 and 14

Tags

CCSS.6.RP.A.3C

How do you solve the proportion 1400 = 60X to find 'X'?

• Add 60 to both sides

• Divide both sides by 60

• Subtract 60 from both sides

• Multiply both sides by 60

Tags

CCSS.7.RP.A.2C

What is the approximate value of 'X' after solving 1400 = 60X?

• 100

• 14

• 60

• 23.3

Which operation is primarily used to solve for 'X' in percent problems using proportions?

• Subtraction

• Addition

• Multiplication and Division

• None of the above

Tags

CCSS.7.RP.A.2C

What does the proportion 'is over of equals percent over 100' help to determine?

• The percentage

• The sum of two numbers

• The total amount

• The difference between two numbers