three travelers A, B, C, ARE ABOUT TO HAVE FOOD .A HAS 5 ROTIS ,B HAS 3 ROTIS .C HAS NO FOOD . SHARE THE FOOD EQUALLY. C OFFERS TO PAY A AND B 8 COINS FOR HIS FOOD. HE SUGGESTS THAT THEY EQUALLY DIVIDE IT IN PORPORTION TO THE AMOUNT OF ROTIS CONTRIBUTED BY THEM TO HIM . HOW MANY COINS SHOULD A GET ?