PSLE Jean had an equal number of green and white beads. She gave 37 green beads and 31 white beads to Mary. She gave the remaining beads to Nora. Nora was given 3 green beads for every 6 white beads. How many beads did Jean have at first?
|
Green |
White |
Before |
3 u + 37 |
6 u + 31 |
Change |
- 37 |
- 31 |
After |
3 u |
6 u |
The number of green and white beads is equal at first.
3 u + 37 = 6 u + 31
6 u - 3 u = 37 - 31
3 u = 6
1 u = 6 ÷ 3 = 2
Number of green beads that Jean had at first
= 3 u + 37
= 3 x 2 + 37
= 6 + 37
= 43
Number of beads that Jean had at first
= 2 x 43
= 86
Answer(s): 86