Kathy, Rachel and Erika have 585 cards altogether. After Rachel gave Erika 42 cards and Erika gave Kathy 10 cards, they all have equal number of cards.
- How many cards did each girl have in the end?
- How many cards did Erika have at first?
|
Kathy |
Rachel |
Erika |
Total |
Before |
|
|
? |
585 |
Change 1 |
|
- 42 |
+ 42 |
|
Change 2 |
+ 10 |
|
- 10 |
|
After |
195 |
195 |
195 |
585 |
(a)
Number of cards that each of them had in the end
= 585 ÷ 3
= 195
(b)
Number of cards that Erika had at first
= 195 + 10 - 42
= 163
Answer(s): (a) 195; (b) 163