Question

Express in the form 1 : n 4 : 12

Answer 1

n = 3

Explanation:

1:n = 4:12

1/n = 4/12

Cross multiply.

4n = 12

n = 12/4

n = 3

Answer 2

1:3

Explanation:

4:12 divides by 4 to give

1 : 3