There was an equal number of grey and pink beads in a box at first. After 18 pink beads were taken out and 39 grey beads were added into the box, there was
14 as many pink beads as grey beads. Find the number of pink beads in the box at first.
| |
Grey beads |
Pink beads |
| Before |
4 u - 39 |
1 u + 18 |
| Change |
+ 39 |
- 18 |
| After |
4 u |
1 u |
The number of grey and pink beads in the box is the same at first.
4 u - 39 = 1 u + 18
4 u - 1 u = 18 + 39
3 u = 57
1 u = 57 ÷ 3 = 19
Number of pink beads at first
= 1 u + 18
= 19 + 18
= 37
Answer(s)37
