Question

Exercise 141

1 Simplify these ratios.
a 2:10
8 4:6
b3:18
h 9:15
C5:25
i 10:35
d 30:5
1 75:10
e 36:12
k 72:20
f 180:20
1 140:112

Answer 1

a 2:10 1:5

8 4:6 2:3

b3:18 1:6

h 9:15 3:5

C5:25 1:5

i 10:35 2:7

d 30:5 6:1

1 75:10 15:2

e 36:12 3:1

k 72:20 18:5

f 180:20 9:1

1 140:112 5:4

Explanation:

Divide each side of the colon by the same number until you cannot divide any more.