PSLE Jen had an equal number of yellow and white beads. She gave 36 yellow beads and 22 white beads to Mary. She gave the remaining beads to Nora. Nora was given 5 yellow beads for every 7 white beads. How many beads did Jen have at first?
|
Yellow |
White |
Before |
5 u + 36 |
7 u + 22 |
Change |
- 36 |
- 22 |
After |
5 u |
7 u |
The number of yellow and white beads is equal at first.
5 u + 36 = 7 u + 22
7 u - 5 u = 36 - 22
2 u = 14
1 u = 14 ÷ 2 = 7
Number of yellow beads that Jen had at first
= 5 u + 36
= 5 x 7 + 36
= 35 + 36
= 71
Number of beads that Jen had at first
= 2 x 71
= 142
Answer(s): 142