Yesterday, Oscar had 28 more buttons than Lee. Today, Oscar gave Lee
35 of his buttons. As a result, he has half as many buttons as Lee now. How many buttons did Oscar have yesterday?
| |
Oscar |
Lee |
More |
| Before |
5 u |
1 u |
4 u |
| Change |
- 3 u |
+ 3 u |
|
| After |
2 u |
4 u |
|
Comparing Oscar and
Lee in the end |
1
|
2
|
|
Number of buttons that Lee has now
= 2 x 2 u
= 4 u
Number of buttons that Oscar had more than Lee yesterday
= 5 u - 1 u
= 4 u
4 u = 28
1 u = 28 ÷ 4 = 7
Number of buttons that Oscar had yesterday
= 5 u
= 5 x 7
= 35
Answer(s): 35
