In a box, 40% of the coins are red, 18% are brown and the rest are purple
- What fraction of the coins is purple? Give your answer in the simplest form.
- There are 420 purple coins in the box. How many coins are there in the box altogether?
(a)
Percentage of coins that are purple
= 100% - 40% - 18%
= 42%
Fraction of coins that are purple
=
42100 =
2150 (b)
Number of purple coins = 21 u
21 u = 420
1 u = 420 ÷ 21 = 20
Total number of coins
= 50 u
= 50 x 20
= 1000
Answer(s): (a)
2150; (b) 1000