Oscar had
58 as many buttons as Zoe. After Oscar bought another 36 buttons, he had 12 less buttons than Zoe. How many buttons did Oscar have at first?
| |
Oscar |
Zoe |
| Before |
5 u |
8 u |
| Change |
+ 36 |
|
| After |
5 u + 36 |
8 u |
Zoe had 12 more buttons than Oscar in the end. So, if Oscar had another 12 buttons, he would have the same number of buttons as Zoe.
8 u = 5 u + 36 + 12
8 u - 5 u = 36 + 12
3 u = 48
1 u = 48 ÷ 3 = 16
Number of buttons that Oscar had at first
= 5 u
= 5 x 16
= 80
Answer: 80
