There was an equal number of green and grey beads in a packet at first. After 23 grey beads were taken out and 27 green beads were added into the packet, there was
13 as many grey beads as green beads. Find the number of grey beads in the packet at first.
|
Green beads |
Grey beads |
Before |
3 u - 27 |
1 u + 23 |
Change |
+ 27 |
- 23 |
After |
3 u |
1 u |
The number of green and grey beads in the packet is the same at first.
3 u - 27 = 1 u + 23
3 u - 1 u = 23 + 27
2 u = 50
1 u = 50 ÷ 2 = 25
Number of grey beads at first
= 1 u + 23
= 25 + 23
= 48
Answer(s)48