Albert had
59 as many erasers as Ivory. After Albert gave away 43 erasers, he had 51 less erasers than Ivory. How many erasers did Ivory have?
| |
Albert |
Ivory |
| Before |
5 u |
9 u |
| Change |
- 43 |
|
| After |
5 u - 43 |
9 u |
Ivory had 51 more erasers than Albert in the end. So, if Albert had another 51 erasers, he would have the same number of erasers as Ivory.
9 u = 5 u - 43 + 51
9 u - 5 u = 51 - 43
4 u = 8
1 u = 8 ÷ 4 = 2
Number of erasers that Ivory had at first
= 9 u
= 9 x 2
= 18
Answer: 18
