Proportional Relationships and Percentages Review

What is the formula for calculating percent change?

• New Value + Old Value / Old Value

• New Value - Old Value / New Value

• New Value * Old Value / 100

• ((New Value - Old Value) / Old Value) * 100

Aria had 50 apples. After a fruitful harvest, she now has 70 apples. Calculate the percent change in the number of apples Aria has.

• 40%

• 10%

• 20%

• 50%

A car travels 300 miles in 5 hours. What is the constant of proportionality in the equation relating distance and time?

• 60

• 100

• 50

• 200

Grace is baking a cake. The recipe calls for 2 cups of flour and 3 cups of sugar. If 'f' represents the amount of flour and 's' represents the amount of sugar, what equation represents the relationship between the flour and sugar Grace uses?

• f = 1.5s

• f = 2/3s

• f = 2s

• f = 3s

If Jeff continues to read at the same rate as shown in the graph, how many hours would it take him to read 90 pages?

Mathematical Equivalence

ON

The graph shows how the number of pages Jeff reads is related to the number of hours he spends reading. If Jeff continues to read at the same rate as shown in the graph, how many hours would it take him to read 90 pages?

Mathematical Equivalence

ON

• A

• B

• C

• D

A movie theater randomly samples the types of admission tickets sold on Friday in the afternoon and the evening. If 400 tickets are sold on a Friday afternoon, use your inference and proportional reasoning skills to determine how many of those 400 tickets would be adult tickets. Type your numerical answer only.

Tags

CCSS.Math.Content.7.RP.A.3

If Jeff continues to read at the same rate as shown in the graph, how many hours would it take him to read 90 pages?

Mathematical Equivalence

ON

David had 80 apples. He gave some to Grace and Aria, and now he has 60 apples. What is the percent change in the number of apples David has?

• 25%

• 20%

• 30%

• 15%