Barbara and Min shared a box of erasers. Barbara had 86% of the total erasers. if Barbara gave 72 of her erasers to Min, both would have the same number of erasers. How many erasers did Barbara have?
| |
Barbara |
Min |
Total |
| Before |
86% |
14% |
100% |
| Change |
- 36% |
+ 36% |
|
| After |
50% |
50% |
100% |
Total number of erasers that Barbara and Min shared = 100%
If Barbara gave 72 erasers to Min, 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 Barbara gave to Min
= 86% - 50%
= 36%
36% → 72
1% → 72 ÷ 36 = 2
Number of erasers that Barbara had
= 86%
= 86 x 2
= 172
Answer(s): 172
