PSLE Zoe had an equal number of yellow and brown beads. She gave 26 yellow beads and 22 brown beads to Mary. She gave the remaining beads to Nora. Nora was given 2 yellow beads for every 4 brown beads. How many beads did Zoe have at first?
|
Yellow |
Brown |
Before |
2 u + 26 |
4 u + 22 |
Change |
- 26 |
- 22 |
After |
2 u |
4 u |
The number of yellow and brown beads is equal at first.
2 u + 26 = 4 u + 22
4 u - 2 u = 26 - 22
2 u = 4
1 u = 4 ÷ 2 = 2
Number of yellow beads that Zoe had at first
= 2 u + 26
= 2 x 2 + 26
= 4 + 26
= 30
Number of beads that Zoe had at first
= 2 x 30
= 60
Answer(s): 60