Perry had 20% more beads than Bobby. Perry gave 25% of his beads to Bobby. Bobby in return gave 30% of his beads to Perry. In the end, Bobby had 266 less beads than Perry. How many beads did Bobby have in the end?
| |
Perry |
Bobby |
| Before |
120% |
100% |
| Change 1 |
- 30% |
+ 30% |
| After 1 |
90% |
130% |
| Change 2 |
+ 39% |
- 39% |
| After 2 |
129% |
91% |
Number of beads that Perry had at first in percent
= 100% + 20%
= 120%
Number of beads that Perry gave to Bobby in percent
= 25% x 120%
=
25100 x 120%
= 30%
Number of beads that Bobby gave to Perry in percent
= 30% x 130%
=
30100 x 130%
= 39%
Number of less beads that Bobby had than Perry in the end
= 129% - 91%
= 38%
38% → 266
1% → 266 ÷ 38 = 7
Number of beads that Bobby had in the end
= 91%
= 91 x 7
= 840
Answer(s): 840
