There are 160 beads in a box. 0.3 of them are purple beads, and the rest are red and brown beads. If there are 34 as many red beads as brown beads. How many brown beads are there?
| Purple beads |
Red beads |
Brown beads |
Total |
| 3 u |
7 u |
10 u |
| |
3 p |
4 p |
|
0.3 =
310 =
310 Fraction of beads that are red and brown beads
= 1 -
310 =
710 Total number of beads = 10 u
10 u = 160
1 u = 160 ÷ 10 = 16
Number of red beads and brown beads
= 7 u
= 7 x 16
= 112
Number of red and brown beads
= 3 p + 4 p
= 7 p
7 p = 112
1 p = 112 ÷ 7 = 16
Number of brown beads
= 4 p
= 4 x 16
= 64
Answer(s): 64
