Ratio and proportion

Write this ratio in its simplest form

10:18

Write this ratio in its simplest form

36:27

write this ratio in its simplest form

9:15

write this ratio in its simplest form

4:12:20

share £90 in the ratio 1:5

Share £150 in the ratio 3:2

share £100 in the ratio

8:9:3

A map has a ratio 1cm:3km. It shows the distance between two towns as 13cm, what is the actual distance between them?

The value of x varies directly to the square of the value of y.

When x = 100, y = 2.

Find the value of x when y = 5.

The value of x varies directly to the square of the value of y.

When x = 100, y = 2.

Find the value of y when x = 25.