Selfish

On a boat 5 people are present with their ages in order i.e ( person 1 has lowest age and person 5 has largest age ) . They found a box with 100 gold coins and want to distribute among themselves . so they dedcided to start with the oldest person , he will distribute coins if distribution is satisfied by majority then they are done otherwise that person will be thrown out of boat and next oldest person will start distribution .

So the puzzle is how much coin person 5 will get Assume all 5 people are good mathematicians......:)