Tim had 87 buttons more than Ken at first. After Tim had given away 135 of his buttons to David, Ken had four times as many buttons as Tim. Find the number of buttons Tim had at first.
|
Tim |
Ken |
Comparing between Tim and Ken |
87 more |
|
Before |
1 u + 135 |
4 u |
Change |
- 135 |
|
After |
1 u |
4 u |
Tim had 87 buttons more than Ken at first.
If 87 more marbles is given to Ken at first, both will have the same number of marbles.
4 u + 87 = 1 u + 135
4 u - 1 u = 135 - 87
3 u = 48
1 u = 48 ÷ 3 = 16
Number of buttons that Tim has at first
= 1 u + 135
= 16 + 135
= 151
Answer(s): 151