Mar 302016
 

In this video a guy stumps his girlfriend with a simple math riddle.

Enjoy!

https://youtu.be/4D1d8ipjblE

It’s a complicated algebra problem. She does pretty good considering that she doesn’t have pencil, paper, and a calculator.

The big brother is 4 years old. His little brother is half his age. When the big brother is 100 years old, how old will the little brother be?

Source…

 

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