PSLE Raeann had an equal number of brown and silver beads. She gave 39 brown beads and 19 silver beads to Mary. She gave the remaining beads to Nora. Nora was given 4 brown beads for every 6 silver beads. How many beads did Raeann have at first?
|
Brown |
Silver |
Before |
4 u + 39 |
6 u + 19 |
Change |
- 39 |
- 19 |
After |
4 u |
6 u |
The number of brown and silver beads is equal at first.
4 u + 39 = 6 u + 19
6 u - 4 u = 39 - 19
2 u = 20
1 u = 20 ÷ 2 = 10
Number of brown beads that Raeann had at first
= 4 u + 39
= 4 x 10 + 39
= 40 + 39
= 79
Number of beads that Raeann had at first
= 2 x 79
= 158
Answer(s): 158