Prize Money =1,00,000
When
4 winners, each gets =1,00,0004=25,000
5 winners, each gets =1,00,0005=20,000
8 winners, each gets =1,00,0008=15,000
10 winners, each gets =1,00,00010=10,000
20 winners, each gets =1,00,00020=5,000
As no. of winners increasing the prize money given to individual winners is decreasing.
So, prize money is inversely proportional to no. of winners.