There are 105 beads in a box. 0.4 of them are brown beads, and the rest are white and purple beads. If there are 18 as many white beads as purple beads. How many purple beads are there?
| Brown beads |
White beads |
Purple beads |
Total |
| 2 u |
3 u |
5 u |
| |
1 p |
8 p |
|
0.4 =
410 =
25 Fraction of beads that are white and purple beads
= 1 -
25 =
35 Total number of beads = 5 u
5 u = 105
1 u = 105 ÷ 5 = 21
Number of white beads and purple beads
= 3 u
= 3 x 21
= 63
Number of white and purple beads
= 1 p + 8 p
= 9 p
9 p = 63
1 p = 63 ÷ 9 = 7
Number of purple beads
= 8 p
= 8 x 7
= 56
Answer(s): 56
