Yesterday, Perry had 18 more buttons than Archie. Today, Perry gave Archie
59 of his buttons. As a result, he has half as many buttons as Archie now. How many buttons did Perry have yesterday?
|
Perry |
Archie |
More |
Before |
9 u |
3 u |
6 u |
Change |
- 5 u |
+ 5 u |
|
After |
4 u |
8 u |
|
Comparing Perry and Archie in the end |
1
|
2
|
|
Number of buttons that Archie has now
= 2 x 4 u
= 8 u
Number of buttons that Perry had more than Archie yesterday
= 9 u - 3 u
= 6 u
6 u = 18
1 u = 18 ÷ 6 = 3
Number of buttons that Perry had yesterday
= 9 u
= 9 x 3
= 27
Answer(s): 27