Unit 5 Ratios and Proportions Test Review

A chipmunk breathes 43 times in 45 seconds. At that rate, about how many breaths will it take in 60 seconds?

• 1935 breaths

• 57 breaths

• 32 breaths

• 88 breaths

Chris wants to get some tips on improving his gaming skills. Four students offer to teach him. Here are their hourly rates:

Student 1: $45 for 30 minutes

Student 2 : $60 for 1 hours

Student 3: $75 for 1.5 hours

Student 4: $110 for 2 hours

Which student offers the best deal?

• Student 1

• Student 2

• Student 3

• Student 4

If Evan spends $17.70 to put 5 gallons of gas into his car, what is the unit rate of the gas?

• $88.50

• $0.34/gallon

• $3.54/gallon

• $3.34/gallon

A car travels 204 miles in 3 hours. At that rate, about how long will it take the car to travel 475 miles?

• 7 hours

• 6 hours

• 1.3 hours

• 8 hours

The red triangle has been dilated by a factor of 0.5. What is the ratio of the perimeter of the RED triangle to the GREEN triangle.

• 1:2

• 0.5:1

• 2:1

• 2:0.5

Which if these four triangles have a ratio of 1:4?

• D:A

• A:B

• A:D

• B:D

Triangle EFG has been dilated to E'F'G'. What scale factor was used?

• 0.5

• 1

• 2

• 3

Solve this equation.

• x = 14

• x = 60

• x = 0

• x = 30

By what scale factor has rectangle ABCD been dilated to A'B'C'D' ?

• 1

• 4

• 3

• 0.5