Opal gave 14% of her collection of beads to Betty thereby increasing Betty's collection by 25%. If Opal had 43 beads left, how many beads did Betty have at first?
| |
Opal's beads |
Betty's beads |
| Before |
100% |
100 u |
| Change |
- 14% |
+ 14% = + 25 u |
| After |
86% |
125 u |
86% of Opal's collection = 43
1% of Opal's collection = 43 ÷ 86 = 0.5
14% of Opal's collection = 14 x 0.5 = 7
25 u of Betty's collection = 7
1 u of Betty's collection =
728 = 0.28
100 u of Betty's collection = 100 x 0.28 = 28
Answer(s): 28
