PSLE Yoko had an equal number of pink and green beads. She gave 38 pink beads and 14 green beads to Mary. She gave the remaining beads to Nora. Nora was given 4 pink beads for every 7 green beads. How many beads did Yoko have at first?
|
Pink |
Green |
Before |
4 u + 38 |
7 u + 14 |
Change |
- 38 |
- 14 |
After |
4 u |
7 u |
The number of pink and green beads is equal at first.
4 u + 38 = 7 u + 14
7 u - 4 u = 38 - 14
3 u = 24
1 u = 24 ÷ 3 = 8
Number of pink beads that Yoko had at first
= 4 u + 38
= 4 x 8 + 38
= 32 + 38
= 70
Number of beads that Yoko had at first
= 2 x 70
= 140
Answer(s): 140