Yoko gave 15% of her collection of beads to Elyse thereby increasing Elyse's collection by 25%. If Yoko had 51 beads left, how many beads did Elyse have at first?
| |
Yoko's beads |
Elyse's beads |
| Before |
100% |
100 u |
| Change |
- 15% |
+ 15% = + 25 u |
| After |
85% |
125 u |
85% of Yoko's collection = 51
1% of Yoko's collection = 51 ÷ 85 = 0.6
15% of Yoko's collection = 15 x 0.6 = 9
25 u of Elyse's collection = 9
1 u of Elyse's collection =
936 = 0.36
100 u of Elyse's collection = 100 x 0.36 = 36
Answer(s): 36
