Roshel gave 12% of her collection of cards to Nora thereby increasing Nora's collection by 30%. If Roshel had 44 cards left, how many cards did Nora have at first?
| |
Roshel's cards |
Nora's cards |
| Before |
100% |
100 u |
| Change |
- 12% |
+ 12% = + 30 u |
| After |
88% |
130 u |
88% of Roshel's collection = 44
1% of Roshel's collection = 44 ÷ 88 = 0.5
12% of Roshel's collection = 12 x 0.5 = 6
30 u of Nora's collection = 6
1 u of Nora's collection =
620 = 0.2
100 u of Nora's collection = 100 x 0.2 = 20
Answer(s): 20
