Pamela and Lynn shared a box of cards. Pamela had 70% of the total cards. if Pamela gave 180 of her cards to Lynn, both would have the same number of cards. How many cards did Pamela have?
| |
Pamela |
Lynn |
Total |
| Before |
70% |
30% |
100% |
| Change |
- 20% |
+ 20% |
|
| After |
50% |
50% |
100% |
Total number of cards that Pamela and Lynn shared = 100%
If Pamela gave 180 cards to Lynn, both would have the same number of cards.
Number of cards that each would have in the end
= 100% ÷ 2
= 50%
Number of cards that Pamela gave to Lynn
= 70% - 50%
= 20%
20% → 180
1% → 180 ÷ 20 = 9
Number of cards that Pamela had
= 70%
= 70 x 9
= 630
Answer(s): 630
