Risa and Victoria shared a box of erasers. Risa had 78% of the total erasers. if Risa gave 84 of her erasers to Victoria, both would have the same number of erasers. How many erasers did Risa have?
| |
Risa |
Victoria |
Total |
| Before |
78% |
22% |
100% |
| Change |
- 28% |
+ 28% |
|
| After |
50% |
50% |
100% |
Total number of erasers that Risa and Victoria shared = 100%
If Risa gave 84 erasers to Victoria, both would have the same number of erasers.
Number of erasers that each would have in the end
= 100% ÷ 2
= 50%
Number of erasers that Risa gave to Victoria
= 78% - 50%
= 28%
28% → 84
1% → 84 ÷ 28 = 3
Number of erasers that Risa had
= 78%
= 78 x 3
= 234
Answer(s): 234
