Proportion and Ratios

Solve for x
20/5 = x/25

• x=100

• x=4

• x=120

• x=5

Solve for x

• x=6.5

• x=8

• x=4

• x=5.5

Solve the proportion:

• 4

• 8

• 14

• 10

Solve the proportion.

• k=5

• k=3.3333333

• k=60

• k=90

The ratio of pass to fail in PE class is 5:1.  If there are 90 students in PE, how many are passing?

• 75 students are passing

• 75 are failing

• 15 students are passing 

• 15 students are failing

Two numbers are in the ratio 7 : 9. If the sum of the numbers is 112, then the larger number is

• 49

• 72

• 63

• 42

A bag of marbles comes with 3 blue marbles, 2 red marbles, and 5 yellow marbles. What is the ratio of red to yellow?

• 2 to 5

• 5 to 3

• 3 to 5

• 5 to 2

Write the ratio of the first measurement to the second measurement.

Length of the school bus: 9 yd
Length of an SUV: 12 ft              

• 9/4

• 4/9

• 3/4

• 4/3

Solve for n
12/6 =  4/n

• n=4

• n=2

• n=3

• n=6

Solve for x

• x=1

• x=3

• x=3/5

• x=2