Ken had
25 as many buttons as Joelle. After Ken gave away 43 buttons, he had 73 less buttons than Joelle. How many buttons did Joelle have?
| |
Ken |
Joelle |
| Before |
2 u |
5 u |
| Change |
- 43 |
|
| After |
2 u - 43 |
5 u |
Joelle had 73 more buttons than Ken in the end. So, if Ken had another 73 buttons, he would have the same number of buttons as Joelle.
5 u = 2 u - 43 + 73
5 u - 2 u = 73 - 43
3 u = 30
1 u = 30 ÷ 3 = 10
Number of buttons that Joelle had at first
= 5 u
= 5 x 10
= 50
Answer: 50
