There was an equal number of yellow and blue beads in a packet at first. After 29 blue beads were taken out and 37 yellow beads were added into the packet, there was
13 as many blue beads as yellow beads. Find the number of blue beads in the packet at first.
| |
Yellow beads |
Blue beads |
| Before |
3 u - 37 |
1 u + 29 |
| Change |
+ 37 |
- 29 |
| After |
3 u |
1 u |
The number of yellow and blue beads in the packet is the same at first.
3 u - 37 = 1 u + 29
3 u - 1 u = 29 + 37
2 u = 66
1 u = 66 ÷ 2 = 33
Number of blue beads at first
= 1 u + 29
= 33 + 29
= 62
Answer(s)62
