Julie gave 14% of her collection of stamps to Xuan thereby increasing Xuan's collection by 28%. If Julie had 43 stamps left, how many stamps did Xuan have at first?
| |
Julie's stamps |
Xuan's stamps |
| Before |
100% |
100 u |
| Change |
- 14% |
+ 14% = + 28 u |
| After |
86% |
128 u |
86% of Julie's collection = 43
1% of Julie's collection = 43 ÷ 86 = 0.5
14% of Julie's collection = 14 x 0.5 = 7
28 u of Xuan's collection = 7
1 u of Xuan's collection =
725 = 0.25
100 u of Xuan's collection = 100 x 0.25 = 25
Answer(s): 25
