Zoe, Kathy and Jen have 315 cards altogether. After Kathy gave Jen 42 cards and Jen gave Zoe 13 cards, they all have equal number of cards.
- How many cards did each girl have in the end?
- How many cards did Jen have at first?
|
Zoe |
Kathy |
Jen |
Total |
Before |
|
|
? |
315 |
Change 1 |
|
- 42 |
+ 42 |
|
Change 2 |
+ 13 |
|
- 13 |
|
After |
105 |
105 |
105 |
315 |
(a)
Number of cards that each of them had in the end
= 315 ÷ 3
= 105
(b)
Number of cards that Jen had at first
= 105 + 13 - 42
= 76
Answer(s): (a) 105; (b) 76