Xuan and Risa shared a box of erasers. Xuan had 78% of the total erasers. if Xuan gave 252 of her erasers to Risa, both would have the same number of erasers. How many erasers did Xuan have?
| |
Xuan |
Risa |
Total |
| Before |
78% |
22% |
100% |
| Change |
- 28% |
+ 28% |
|
| After |
50% |
50% |
100% |
Total number of erasers that Xuan and Risa shared = 100%
If Xuan gave 252 erasers to Risa, 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 Xuan gave to Risa
= 78% - 50%
= 28%
28% → 252
1% → 252 ÷ 28 = 9
Number of erasers that Xuan had
= 78%
= 78 x 9
= 702
Answer(s): 702
