Question

A bag contains 25 balls 20 of which are blue what percentage of balls are not blue

Answer 1

20%

Explanation:

20/25 = blue

This means 5/25 of the balls in the bag are NOT blue

(25-20 = 5)

We need to convert 5/25 to a percentage

`(5)/(25) = (5*4)/(25*4)=(20)/(100)`

% = per cent

"per" means "out of"

"cent" means "one hundred"

so

20/100 = 20%