In a box, 42% of the erasers are red, 20% are silver and the rest are green
- What fraction of the erasers is green? Give your answer in the simplest form.
- There are 513 green erasers in the box. How many erasers are there in the box altogether?
(a)
Percentage of erasers that are green
= 100% - 42% - 20%
= 38%
Fraction of erasers that are green
=
38100 =
1950 (b)
Number of green erasers = 19 u
19 u = 513
1 u = 513 ÷ 19 = 27
Total number of erasers
= 50 u
= 50 x 27
= 1350
Answer(s): (a)
1950; (b) 1350