Carl has 310 mini cupcakes and Paul has 790 mini cupcakes. How many mini cupcakes must Paul give to Carl so that Carl will have thrice as many mini cupcakes as Paul?
|
Carl |
Paul |
Total |
Before |
310 |
790 |
1100 |
Change |
+ ? |
- ? |
|
After |
3 u |
1 u |
4 u |
Total number of mini cupcakes
= 310 + 790
= 1100
Total number of mini cupcakes
= 3 u + 1 u
= 4 u
4 u = 1100
1 u = 1100 ÷ 4 = 275
Number of mini cupcakes that Paul must give Carl
= 790 - 275
= 515
Answer(s): 515