Sean had
25 as many erasers as Gwen. After Sean bought another 32 erasers, he had 16 less erasers than Gwen. How many erasers did Sean have at first?
| |
Sean |
Gwen |
| Before |
2 u |
5 u |
| Change |
+ 32 |
|
| After |
2 u + 32 |
5 u |
Gwen had 16 more erasers than Sean in the end. So, if Sean had another 16 erasers, he would have the same number of erasers as Gwen.
5 u = 2 u + 32 + 16
5 u - 2 u = 32 + 16
3 u = 48
1 u = 48 ÷ 3 = 16
Number of erasers that Sean had at first
= 2 u
= 2 x 16
= 32
Answer: 32
