Cathy and Risa shared a box of erasers. Cathy had 88% of the total erasers. if Cathy gave 228 of her erasers to Risa, both would have the same number of erasers. How many erasers did Risa have?
| |
Cathy |
Risa |
Total |
| Before |
88% |
12% |
100% |
| Change |
- 38% |
+ 38% |
|
| After |
50% |
50% |
100% |
Total number of erasers that Cathy and Risa shared = 100%
If Cathy gave 228 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 Cathy gave to Risa
= 88% - 50%
= 38%
38% → 228
1% → 228 ÷ 38 = 6
Number of erasers that Risa had
= 12%
= 12 x 6
= 72
Answer(s): 72
