Shannon and Rachel shared a box of cards. Shannon had 80% of the total cards. if Shannon gave 210 of her cards to Rachel, both would have the same number of cards. How many cards did Rachel have?
| |
Shannon |
Rachel |
Total |
| Before |
80% |
20% |
100% |
| Change |
- 30% |
+ 30% |
|
| After |
50% |
50% |
100% |
Total number of cards that Shannon and Rachel shared = 100%
If Shannon gave 210 cards to Rachel, 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 Shannon gave to Rachel
= 80% - 50%
= 30%
30% → 210
1% → 210 ÷ 30 = 7
Number of cards that Rachel had
= 20%
= 20 x 7
= 140
Answer(s): 140
