Marion and Emily had an equal number of stamps at first. After Marion gave 10 stamps to Emily, Emily had 21 stamps. How many stamps does Marion have in the end?
| |
Marion |
Emily |
| Before |
1 u |
1 u |
| Change |
- 10 |
+ 10 |
| After |
1 u - 10 |
21 |
Number of stamps that Emily had at first
= 21 - 10
= 11
1 u = 11
Number of stamps that Marion had at first = 11
Number of stamps that Marion had in the end
= 1 u - 10
= 11 - 10
= 1
Answer(s): 1
