Oscar had some beads at first. After he bought another 75 beads, he had four times as many beads as before. How many beads did Oscar have at first?
| |
Beads |
| Before |
1 u |
| Change |
+ 75 |
| After |
1 u + 75 = 4 u |
Number of beads after he bought = 1 u + 75
Number of beads that is four times as many beads as before = 4 x 1 u = 4 u
4 u = 1 u + 75
4 u - 1 u = 75
3 u = 75
1 u = 75 ÷ 3 = 25
Number of stickers that Kim had at first
= 1 u
= 25
Answer(s): 25
