PSLE Winnie had an equal number of brown and silver beads. She gave 18 brown beads and 14 silver beads to Mary. She gave the remaining beads to Nora. Nora was given 5 brown beads for every 7 silver beads. How many beads did Winnie have at first?
|
Brown |
Silver |
Before |
5 u + 18 |
7 u + 14 |
Change |
- 18 |
- 14 |
After |
5 u |
7 u |
The number of brown and silver beads is equal at first.
5 u + 18 = 7 u + 14
7 u - 5 u = 18 - 14
2 u = 4
1 u = 4 ÷ 2 = 2
Number of brown beads that Winnie had at first
= 5 u + 18
= 5 x 2 + 18
= 10 + 18
= 28
Number of beads that Winnie had at first
= 2 x 28
= 56
Answer(s): 56