Vaidev has 397 mini cupcakes and Warren has 688 mini cupcakes. How many mini cupcakes must Warren give to Vaidev so that Vaidev will have 47 more mini cupcakes than Warren?
| |
Vaidev |
Warren |
Total |
| Before |
397 |
688 |
1085 |
| Change |
+ ? |
- ? |
|
| After |
1 u + 47 |
1 u |
1085 |
The total number of mini cupcakes remains unchanged after Warren gives to Vaidev.
Total number of mini cupcakes
= 397 + 688
= 1085
Total number of mini cupcakes in the end
= 1 u + 1 u + 47
= 2 u + 47
2 u + 47 = 1085
2 u = 1085 - 47
2 u = 1038
1 u = 1038 ÷ 2 = 519
Number of mini cupcakes that Warren must give to Vaidev
= 688 - 519
= 169
Answer(s): 169
