There was an equal number of blue and brown beads in a bag at first. After 27 brown beads were taken out and 36 blue beads were added into the bag, there was
14 as many brown beads as blue beads. Find the number of brown beads in the bag at first.
| |
Blue beads |
Brown beads |
| Before |
4 u - 36 |
1 u + 27 |
| Change |
+ 36 |
- 27 |
| After |
4 u |
1 u |
The number of blue and brown beads in the bag is the same at first.
4 u - 36 = 1 u + 27
4 u - 1 u = 27 + 36
3 u = 63
1 u = 63 ÷ 3 = 21
Number of brown beads at first
= 1 u + 27
= 21 + 27
= 48
Answer(s)48
