Joelle and Risa shared a box of marbles. Joelle had 82% of the total marbles. if Joelle gave 256 of her marbles to Risa, both would have the same number of marbles. How many marbles did Joelle have?
| |
Joelle |
Risa |
Total |
| Before |
82% |
18% |
100% |
| Change |
- 32% |
+ 32% |
|
| After |
50% |
50% |
100% |
Total number of marbles that Joelle and Risa shared = 100%
If Joelle gave 256 marbles to Risa, both would have the same number of marbles.
Number of marbles that each would have in the end
= 100% ÷ 2
= 50%
Number of marbles that Joelle gave to Risa
= 82% - 50%
= 32%
32% → 256
1% → 256 ÷ 32 = 8
Number of marbles that Joelle had
= 82%
= 82 x 8
= 656
Answer(s): 656
