Question
In a box, 30% of the buttons are purple, 18% are blue and the rest are black
  1. What fraction of the buttons is black? Give your answer in the simplest form.
  2. There are 416 black buttons in the box. How many buttons are there in the box altogether?
3 m
(a)

Click button first when a symbol is required. X

(b)

Click button first when a symbol is required. X

In a box, 30% of the buttons are purple, 18% are blue and the rest are black
  1. What fraction of the buttons is black? Give your answer in the simplest form.
  2. There are 416 black buttons in the box. How many buttons are there in the box altogether?