In a box, 40% of the erasers are green, 20% are white and the rest are black
- What fraction of the erasers is black? Give your answer in the simplest form.
- There are 606 black erasers in the box. How many erasers are there in the box altogether?
(a)
Percentage of erasers that are black
= 100% - 40% - 20%
= 40%
Fraction of erasers that are black
=
40100 =
25 (b)
Number of black erasers = 2 u
2 u = 606
1 u = 606 ÷ 2 = 303
Total number of erasers
= 5 u
= 5 x 303
= 1515
Answer(s): (a)
25; (b) 1515