Jaslyn gave 10% of her collection of stamps to Emily thereby increasing Emily's collection by 25%. If Jaslyn had 36 stamps left, how many stamps did Emily have at first?
| |
Jaslyn's stamps |
Emily's stamps |
| Before |
100% |
100 u |
| Change |
- 10% |
+ 10% = + 25 u |
| After |
90% |
125 u |
90% of Jaslyn's collection = 36
1% of Jaslyn's collection = 36 ÷ 90 = 0.4
10% of Jaslyn's collection = 10 x 0.4 = 4
25 u of Emily's collection = 4
1 u of Emily's collection =
416 = 0.16
100 u of Emily's collection = 100 x 0.16 = 16
Answer(s): 16
