Out of total population in a certain town in South Africa, `60%` are Black and the rest are White. It was estimated that their mean income were respectively 2000 and 5000 pounds. Find the average income of the entire town.

Out of the total population in a certain town in South Africa, 60% belonged to the Black Race and the rest belonged to the White Race.It was estimated that their mean incomes were respectively 2,000 and 5,000 pounds. Find the average income of the entire town.

A town has total population. 25000 out of which 13000 read ''The Hindustan times'' and 10500 read ''The Indian Express'' and 2500 read both papers. Find the percentage of population who read neither of these newspapers.