Hilda and Joelle had the same number of buttons. After Hilda had given away 72 buttons, Joelle had 5 times as many buttons as Hilda. How many buttons did each of them have at first?
| |
Hilda |
Joelle |
| Before |
1 u + 72 |
5 u |
| Change |
- 72 |
|
| After |
1 u |
5 u |
Number of buttons that Joelle had remains unchanged.
Number of buttons that Hilda and Joelle had at first is equal.
5 u = 1 u + 72
5 u - 1 u = 72
4 u = 72
1 u = 72 ÷ 4= 18
Number of buttons that each of them had at first
= 1 u + 72
= 18 + 72
= 90
Answer(s): 90
