PSLE Tina had an equal number of silver and yellow beads. She gave 38 silver beads and 14 yellow beads to Mary. She gave the remaining beads to Nora. Nora was given 2 silver beads for every 5 yellow beads. How many beads did Tina have at first?
|
Silver |
Yellow |
Before |
2 u + 38 |
5 u + 14 |
Change |
- 38 |
- 14 |
After |
2 u |
5 u |
The number of silver and yellow beads is equal at first.
2 u + 38 = 5 u + 14
5 u - 2 u = 38 - 14
3 u = 24
1 u = 24 ÷ 3 = 8
Number of silver beads that Tina had at first
= 2 u + 38
= 2 x 8 + 38
= 16 + 38
= 54
Number of beads that Tina had at first
= 2 x 54
= 108
Answer(s): 108