PSLE Anna had an equal number of grey and pink beads. She gave 35 grey beads and 29 pink beads to Mary. She gave the remaining beads to Nora. Nora was given 3 grey beads for every 5 pink beads. How many beads did Anna have at first?
|
Grey |
Pink |
Before |
3 u + 35 |
5 u + 29 |
Change |
- 35 |
- 29 |
After |
3 u |
5 u |
The number of grey and pink beads is equal at first.
3 u + 35 = 5 u + 29
5 u - 3 u = 35 - 29
2 u = 6
1 u = 6 ÷ 2 = 3
Number of grey beads that Anna had at first
= 3 u + 35
= 3 x 3 + 35
= 9 + 35
= 44
Number of beads that Anna had at first
= 2 x 44
= 88
Answer(s): 88