Irene and Lucy shared a box of cards. Irene had 72% of the total cards. if Irene gave 110 of her cards to Lucy, both would have the same number of cards. How many cards did Irene have?
| |
Irene |
Lucy |
Total |
| Before |
72% |
28% |
100% |
| Change |
- 22% |
+ 22% |
|
| After |
50% |
50% |
100% |
Total number of cards that Irene and Lucy shared = 100%
If Irene gave 110 cards to Lucy, 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 Irene gave to Lucy
= 72% - 50%
= 22%
22% → 110
1% → 110 ÷ 22 = 5
Number of cards that Irene had
= 72%
= 72 x 5
= 360
Answer(s): 360
