There were 30 more pupils in Group D than in Group E. If 12 pupils transferred from Group D to Group E, how many more pupils would be in Group D than in Group E?
|
Group D |
Group E |
|
Before |
1 u + 30 |
1 u |
|
Change |
- 12 |
+ 12 |
|
After |
1 u + 18 |
1 u + 12 |
|
Number of pupils that Group D had after transferring to Group E
= 1 u + 30 - 12
= 1 u + 18
Number of pupils that Group E had after the transfer
= 1 u + 12
Number of pupils in Group D more than in Group E
= 18 - 12
= 6
Answer(s): 6