Kimberly and Ivory shared a box of cards. Kimberly had 60% of the total cards. if Kimberly gave 90 of her cards to Ivory, both would have the same number of cards. How many cards did Kimberly have?
| |
Kimberly |
Ivory |
Total |
| Before |
60% |
40% |
100% |
| Change |
- 10% |
+ 10% |
|
| After |
50% |
50% |
100% |
Total number of cards that Kimberly and Ivory shared = 100%
If Kimberly gave 90 cards to Ivory, 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 Kimberly gave to Ivory
= 60% - 50%
= 10%
10% → 90
1% → 90 ÷ 10 = 9
Number of cards that Kimberly had
= 60%
= 60 x 9
= 540
Answer(s): 540
