Question

Express 0.5bar in p/q

Answer 1

Let 0.5bar be x
then 10x = 5.5bar
:. 10x - x = 5.5bar - 0.5bar
=> 9x = 5
=> x = 5/9
:. 0.5 bar = 5/0

Answer 2

asume =x
multiple both side by 10
5.5=10x
x=10/5.5
x=2/1.1