There are 200 beads in a box. 0.1 of them are brown beads, and the rest are gold and pink beads. If there are 18 as many gold beads as pink beads. How many pink beads are there?
Brown beads |
Gold beads |
Pink beads |
Total |
1 u |
9 u |
10 u |
|
1 p |
8 p |
|
0.1 =
110 =
110 Fraction of beads that are gold and pink beads
= 1 -
110 =
910 Total number of beads = 10 u
10 u = 200
1 u = 200 ÷ 10 = 20
Number of gold beads and pink beads
= 9 u
= 9 x 20
= 180
Number of gold and pink beads
= 1 p + 8 p
= 9 p
9 p = 180
1 p = 180 ÷ 9 = 20
Number of pink beads
= 8 p
= 8 x 20
= 160
Answer(s): 160