PSLE Tina had an equal number of green and silver beads. She gave 26 green beads and 10 silver beads to Mary. She gave the remaining beads to Nora. Nora was given 3 green beads for every 5 silver beads. How many beads did Tina have at first?
|
Green |
Silver |
Before |
3 u + 26 |
5 u + 10 |
Change |
- 26 |
- 10 |
After |
3 u |
5 u |
The number of green and silver beads is equal at first.
3 u + 26 = 5 u + 10
5 u - 3 u = 26 - 10
2 u = 16
1 u = 16 ÷ 2 = 8
Number of green beads that Tina had at first
= 3 u + 26
= 3 x 8 + 26
= 24 + 26
= 50
Number of beads that Tina had at first
= 2 x 50
= 100
Answer(s): 100