In a box, 47% of the coins are grey, 17% are yellow and the rest are brown
- What fraction of the coins is brown? Give your answer in the simplest form.
- There are 648 brown coins in the box. How many coins are there in the box altogether?
(a)
Percentage of coins that are brown
= 100% - 47% - 17%
= 36%
Fraction of coins that are brown
=
36100 =
925 (b)
Number of brown coins = 9 u
9 u = 648
1 u = 648 ÷ 9 = 72
Total number of coins
= 25 u
= 25 x 72
= 1800
Answer(s): (a)
925; (b) 1800