a man earns ¡ê20000 per annum. he receives a 6% increase each day. how much does he earn after eight years? how many years does he take for jpgis salary to double?

Answer 1

I am sure you meant 6% each year, not each day
(at per day, the answer would be an absurdly large number)

after 1 year -- 20000(1.06)
after 2 years -- 20000(1.06)^2
..
after 8 years: amount = 20000(1.06)^8
= ....