In a box, 49% of the coins are brown, 11% are gold and the rest are white
- What fraction of the coins is white? Give your answer in the simplest form.
- There are 640 white coins in the box. How many coins are there in the box altogether?
(a)
Percentage of coins that are white
= 100% - 49% - 11%
= 40%
Fraction of coins that are white
=
40100 =
25 (b)
Number of white coins = 2 u
2 u = 640
1 u = 640 ÷ 2 = 320
Total number of coins
= 5 u
= 5 x 320
= 1600
Answer(s): (a)
25; (b) 1600