There are 110 beads in a bag. 0.3 of them are purple beads, and the rest are grey and yellow beads. If there are 38 as many grey beads as yellow beads. How many yellow beads are there?
Purple beads |
Grey beads |
Yellow beads |
Total |
3 u |
7 u |
10 u |
|
3 p |
8 p |
|
0.3 =
310 =
310 Fraction of beads that are grey and yellow beads
= 1 -
310 =
710 Total number of beads = 10 u
10 u = 110
1 u = 110 ÷ 10 = 11
Number of grey beads and yellow beads
= 7 u
= 7 x 11
= 77
Number of grey and yellow beads
= 3 p + 8 p
= 11 p
11 p = 77
1 p = 77 ÷ 11 = 7
Number of yellow beads
= 8 p
= 8 x 7
= 56
Answer(s): 56