In a box, 50% of the buttons are brown, 20% are red and the rest are silver
- What fraction of the buttons is silver? Give your answer in the simplest form.
- There are 687 silver buttons in the box. How many buttons are there in the box altogether?
(a)
Percentage of buttons that are silver
= 100% - 50% - 20%
= 30%
Fraction of buttons that are silver
=
30100 =
310 (b)
Number of silver buttons = 3 u
3 u = 687
1 u = 687 ÷ 3 = 229
Total number of buttons
= 10 u
= 10 x 229
= 2290
Answer(s): (a)
310; (b) 2290