Olivia and Risa shared a box of marbles. Olivia had 64% of the total marbles. if Olivia gave 56 of her marbles to Risa, both would have the same number of marbles. How many marbles did Olivia have?
| |
Olivia |
Risa |
Total |
| Before |
64% |
36% |
100% |
| Change |
- 14% |
+ 14% |
|
| After |
50% |
50% |
100% |
Total number of marbles that Olivia and Risa shared = 100%
If Olivia gave 56 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 Olivia gave to Risa
= 64% - 50%
= 14%
14% → 56
1% → 56 ÷ 14 = 4
Number of marbles that Olivia had
= 64%
= 64 x 4
= 256
Answer(s): 256
