Ratios

Highest Common Factor

100

12 and 24

12

200

18 and 24

6

300

32 and 36

4

400

90 and 120

30

500

24 and 60

12

Simplify ratios

100

2L : 500mL

2000mL : 500mL

200

5kg : 60g

5000g : 60g

300

10cm : 31cm

10cm : 31cm

400

45 seconds : 2 minutes

45 seconds : 120 seconds

500

80cm : 2.5m : 0.7km

80cm : 250cm : 7000cm

Simplifying using HCF

100

4:8

1:2

200

10:5

2:1

300

16:24

2:3

400

7:20

7:20

500

99:11

9:1

Equivalent ratios

100

2:5 = 6:a

a = 15

200

7:9 = b:36

b=28

300

1:c = 14:42

c=3

400

d:15 = 2:5

d=6

500

6:1 = 10:e

e = 10/6

Dividing ratios

100

30 (2:3)

12:18

200

42 (5:1)

35:7

300

38 (12:7)

24:14

400

30 (2:3:1)

10:15:5

500

54 (2:7:9)

6:21:27