In a box, 45% of the marbles are silver, 20% are black and the rest are blue
- What fraction of the marbles is blue? Give your answer in the simplest form.
- There are 609 blue marbles in the box. How many marbles are there in the box altogether?
(a)
Percentage of marbles that are blue
= 100% - 45% - 20%
= 35%
Fraction of marbles that are blue
=
35100 =
720 (b)
Number of blue marbles = 7 u
7 u = 609
1 u = 609 ÷ 7 = 87
Total number of marbles
= 20 u
= 20 x 87
= 1740
Answer(s): (a)
720; (b) 1740