Nora and Gwen shared a box of erasers. Nora had 78% of the total erasers. if Nora gave 140 of her erasers to Gwen, both would have the same number of erasers. How many erasers did Gwen have?
| |
Nora |
Gwen |
Total |
| Before |
78% |
22% |
100% |
| Change |
- 28% |
+ 28% |
|
| After |
50% |
50% |
100% |
Total number of erasers that Nora and Gwen shared = 100%
If Nora gave 140 erasers to Gwen, 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 Nora gave to Gwen
= 78% - 50%
= 28%
28% → 140
1% → 140 ÷ 28 = 5
Number of erasers that Gwen had
= 22%
= 22 x 5
= 110
Answer(s): 110
