Kimberly and her sister have some buttons. Kimberly had 70 more buttons than her sister. After Kimberly gave her sister 15 buttons, her sister has 73 buttons now.
- How many buttons did her sister have at first?
- How many buttons does Kimberly have now?
|
Kimberly |
Her sister |
Before |
1 u + 70 |
1 u |
Change |
- 15 |
+ 15 |
After |
? |
73 |
(a)
Number of buttons that her sister had at first
= 73 -15
= 58
(b)
Number of buttons that Kimberly had at first
= 1 u + 70
= 58 + 70
= 128
Number of buttons that Kimberly has now
= 128 - 15
= 113
Answer(s): (a) 58; (b) 113