There are 100 beads in a basket. 0.3 of them are grey beads, and the rest are silver and gold beads. If there are 37 as many silver beads as gold beads. How many gold beads are there?
| Grey beads |
Silver beads |
Gold beads |
Total |
| 3 u |
7 u |
10 u |
| |
3 p |
7 p |
|
0.3 =
310 =
310 Fraction of beads that are silver and gold beads
= 1 -
310 =
710 Total number of beads = 10 u
10 u = 100
1 u = 100 ÷ 10 = 10
Number of silver beads and gold beads
= 7 u
= 7 x 10
= 70
Number of silver and gold beads
= 3 p + 7 p
= 10 p
10 p = 70
1 p = 70 ÷ 10 = 7
Number of gold beads
= 7 p
= 7 x 7
= 49
Answer(s): 49
