Kylie and her sister have some pens. Kylie had 78 more pens than her sister. After Kylie gave her sister 28 pens, her sister has 67 pens now.
- How many pens did her sister have at first?
- How many pens does Kylie have now?
|
Kylie |
Her sister |
Before |
1 u + 78 |
1 u |
Change |
- 28 |
+ 28 |
After |
? |
67 |
(a)
Number of pens that her sister had at first
= 67 -28
= 39
(b)
Number of pens that Kylie had at first
= 1 u + 78
= 39 + 78
= 117
Number of pens that Kylie has now
= 117 - 28
= 89
Answer(s): (a) 39; (b) 89