In a box, 40% of the marbles are black, 20% are red and the rest are gold
- What fraction of the marbles is gold? Give your answer in the simplest form.
- There are 440 gold marbles in the box. How many marbles are there in the box altogether?
(a)
Percentage of marbles that are gold
= 100% - 40% - 20%
= 40%
Fraction of marbles that are gold
=
40100 =
25 (b)
Number of gold marbles = 2 u
2 u = 440
1 u = 440 ÷ 2 = 220
Total number of marbles
= 5 u
= 5 x 220
= 1100
Answer(s): (a)
25; (b) 1100