There was an equal number of yellow and white beads in a box at first. After 17 white beads were taken out and 43 yellow beads were added into the box, there was
13 as many white beads as yellow beads. Find the number of white beads in the box at first.
| |
Yellow beads |
White beads |
| Before |
3 u - 43 |
1 u + 17 |
| Change |
+ 43 |
- 17 |
| After |
3 u |
1 u |
The number of yellow and white beads in the box is the same at first.
3 u - 43 = 1 u + 17
3 u - 1 u = 17 + 43
2 u = 60
1 u = 60 ÷ 2 = 30
Number of white beads at first
= 1 u + 17
= 30 + 17
= 47
Answer(s)47
