Fred had some erasers at first. After he bought another 62 erasers, he had thrice as many erasers as before. How many erasers did Fred have at first?
| |
Erasers |
| Before |
1 u |
| Change |
+ 62 |
| After |
1 u + 62 = 3 u |
Number of erasers after he bought = 1 u + 62
Number of erasers that is thrice as many erasers as before = 3 x 1 u = 3 u
3 u = 1 u + 62
3 u - 1 u = 62
2 u = 62
1 u = 62 ÷ 2 = 31
Number of stickers that Kim had at first
= 1 u
= 31
Answer(s): 31
