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Ratio Review 7

Total questions: 19

Worksheet time: 47mins

Name
Class
Date
1.

Simplify as fully as possible 28:42

a)

14 : 21

b)

3 : 2

c)

1 : 1.5

d)

2 : 3

2.

In a class of 10 boys and 14 girls the ratio of girls to boys is

a)

10 : 14

b)

1 : 2

c)

7 : 5

d)

5 : 7

3.

Mr Cooper drives 472 km in 8 hours. At this rate, how many kilometres would he drive in 6 hours?

a)

381

b)

340

c)

101

d)

354

4.

Share 150 sweets in the ratio 3:7:5

a)

15:35:25

b)

30:50:70

c)

30:70:50

d)

13:17:15

5.

The ratio of numbers of girls and boys participating in sports of a school is 4:5. If the number of girls is 153, determine the number of boys participating in the sports.

a)

68

b)

78

c)

85

d)

45

6.

Simplify as fully as possible 18 : 24 :30

a)

9 : 12 : 15

b)

6 : 8 :10

c)

2 : 3 : 4

d)

3 : 4 : 5

7.

In a bag the ratio of red marbles to green marbles is 4 : 5. what fraction of the marbles are red?

a)

4/5

b)

4/9

c)

5/9

d)

1/2

8.

On a map with a scale of 1 cm : 2.5 km two towns are 5 cm apart. What is this distance in real life?

a)

125 km

b)

0.125 km

c)

2 km

d)

12.5 km

9.
Which is the better deal?
Doritos
£4.20 for 10kg
OR
Cheetos
£4.80 for 12kg
a)
Doritos
b)
Cheetos
10.
a)
1
b)
3
c)
12
d)
2
11.
Solve the proportion.
a)
q=2
b)
q=9
c)
q=4.5
d)
q=6
12.
Find the unit rate of the ratio below:
30 cm of snow in 6 hours
a)
6 cm of snow per hour
b)
30 cm of snow per hour
c)
5 cm of snow per hour
d)
3 cm of snow per hour
13.
Are the triangles similar?
a)
Yes
b)
No
14.
Solve for X.
a)
2 ft
b)
3 ft
c)
4 ft
d)
6 ft
15.
A photo is 12 in. wide by 18 in. tall. If the width is scaled down to 9 inches, how tall should the similar photo be? 
a)
15 in
b)
0.67
c)
13.5 in
d)
2
16.
What is the scale factor of these similar shapes?
a)
10
b)
7
c)
9
d)
11
17.

The pair of figures are similar. Find the missing side.

a)

x = 9

b)

x = 28

c)

x = 7

d)

x = 63

18.
A cake recipe calls for 1.5 cups of milk and 3 cups of flour. Seth made a mistake and used 5 cups of flour. How many cups of milk should he use to keep the proportions correct?
a)
2.5 cups milk
b)
1.75 cups milk
c)
2 cups flour
d)
2.25 cups milk
19.
A parking lot has 117 spaces total. If 36 of the spaces have cars in them, what is the ratio of empty spaces to filled spaces?
a)
117:36
b)
36:117
c)
36:81
d)
81:36