Winners of the Forum Event. Congratulations!

COTK-Chen

Dear players,
Forum Event "The Interesting Math Question Can Relax You!" from Mar.2nd to Mar.4th has ended. Thanks for your active participation and answers. Now, we announce the answer and winners. If any other players answer the question correctly, but you aren't on the following list. Please contact us in forum and write your right ign and server. Congratulations!
Answer:
Assume older brother's money is X dollars, younger brother's money is Y dollars, so the book's price is (X+0.01)dollars.
So X+Y<X+0.01
          Y<0.01,
Because 1cent is the smallest amount of money possible, older brother's money is 0 dollars, the book's price is 10 dollars and younger brother's money is 9.99 dollars.
Winners:

fatty

chen pls check ur mail.
appeal pls,i sent u the correct answer as well.
tqvm

z_hero

same to the above case chen.
mind to double check it pls

Bitty

dear chen,i m the 3rd now.