Proportion Practice #1

Question A

18

12

3

2

n

x 6

x 6

Question B

25

20

5

4

n

x 5

x 5

Question C

42

7

6

1

n

x 7

x 7

x 6 x 6

Question D

20

8

5

2

n

x 4

x 4

Question E

17

85

1

5

n

x 17

x 17

x 5 x 5

Question F

24

16

9

6

3

2

24

16

x 3

x 3

3

2

9

6

n

Question G

40

16

15

6

5

2

15

6

x 8

x 8

40

16

5

2

n

Question H

15

10

12

8

3

2

15

10

x 4

x 4

3

2

12

8

n

Question I

3 : 4 = 27 : 36

x 9

n

x 9

Question J

5 : 6 = 20 : 24

x 4

n

x 4

Question K

2 : 7 = 10 : 35

x 5

n

x 5

Question L

6 : 1 = 78 : 13

x 6

n

x 6

Question M

n : 8 = 21 : 28

x 2

x 2

6 : 8 = 3 : 4n

Question N

7 : 10 = 140 : 200

x 20

n

x 20

Question O

8 : 5 = 320 : 200

x 40

n

x 40

Question P

4 : 3 = 180 : 135

x 45

n

x 45

Write a proportion for each problem and solve it

Baseball player: 3 hits for every 8 times at bat.

How many hits for 96 times at bat?

96

36

8

3

batat

hits

n

x 12

x 12

Write a proportion for each problem and solve it

Car: 6 kilometres driven per litre of gasoline. How many kilometres driven on 37 litres?

37

222

1

6

litres

kilometres

n

x 6 x 6

Write a proportion for each problem and solve it

Basketball player: 7 free throws out of every 9 attempts. How many free throws in 135 attempts?

135

105

9

7

attempts

throwsfree

n

x 15

x 15

Write a proportion for each problem and solve it

Picnic: 2 hot dogs per person.How many hot dogs needed to feed 126 people?

126

252

1

2

person

dogshot

nx 2x 2

Write a proportion for each problem and solve it

Class: ratio of girls to boys is 7 to 9. If there are 56 girls how many boys are there?

72

56

9

7

boys

girls

n

x 8

x 8

Write a proportion for each problem and solve it

Population: ratio of City X to City Y is 6 to 5. If 3000 people live in City Y, how many in City X?

3000

3600

5

6

YCity

XCity

n

x 600

x 600

Write a proportion for each problem and solve it

Scale on map: 1cm = 35kmWhat is the actual distance if the distance on the map is 4.9cm?

5.171

9.4

35

1

km

cm

n

x 4.9

x 4.9

Write a proportion for each problem and solve it

Recipe: 5 grams salt per litre of water. How many grams of salt needed for 1 kilolitre of water?

1000

5000

1

5

L

g

n

x 1000

x 1000

Proportion Practice

Multiple Choice Set 13

Write a proportion for each problem and solve it

What value of x makes

the following proportion true?

20

5.7

8

3

x 2.5

x 2.5

Set 13

#1

Write a proportion for each problem and solve it

If the value of a in the proportion below is 2, what is the value of b?

10

5

4

2x 2

x 2

a

b

Set 13

#2

Write a proportion for each problem and solve it

77

5

88

16

5.5

1

88

16

176

32

88

16

All of the following values of x and y will make the proportion below true except which one?

x 5.5 x 5.5

Set 13

#3

22

4

88

16

y

x

88

16

Write a proportion for each problem and solve it

66

42

22

14

11

7

22

14

2.2

4.1

22

14

Name two sets of values for a and b that will make the proportion below true:

Set 13

#4

44

28

22

14

22

14

b

a

Write a proportion for each problem and solve it

If a flagpole that is 30 feet high casts a shadow 16 feet long,

what is the length of the shadow cast by a flagpole that is 36 feet high?

feet 51

19

feet 36

feet 16

feet 30

shadow ofheight

height actual

n

x 1.2

x 1.2

Set 13

#5

Write a proportion for each problem and solve it

A factory produces 54 widgets every half hour. At this rate, how long would it take to produce 405 widgets?

hours 43

3

feet 405

hours 21

feet 54

hours

widgetsof #

n

x 7.5

x 7.5

Set 13

#6

Write a proportion for each problem and solve it

In a 40-piece box of candy, 16 of the pieces contain nuts. At this rate, how many pieces of candy with nuts would be found in a 60-piece box?

60

24

40

16

candy of # total

nuts with #

n

x 1.5

x 1.5

Set 13

#7

Write a proportion for each problem and solve it

This morning it took May 20 minutes to read 16 pages of her book. If she plans to read for 2 hours before going to bed tonight, what is the best prediction for the number of pages she will read?

min120

pages 96

min 20

pages 16

minutes

pages

n

x 6

x 6

Set 13

#8

Write a proportion for each problem and solve it

If a dozen butter cookies cost $3, how much do 54 cookies cost?

54

50.13$

12

$3

cookies

$

nx 4

x 4

Set 13

#9

Write a proportion for each problem and solve it

John pays $0.78 for two feet of wire. When he gets home, he realizes that he needs 11 more yards of wire to finish his project. How much will it cost to buy this additional wire?

33

87.12$

2

$0.78

wireoffeet

$

n

x 16.5

x 16.5 Set 13

#10

1 yard = 3 feet

Proportion Practice

Multiple Choice Set 14 & 15

Finish and Hand in!