The population of a village is 50000. It increases by 5% every year. Find the population at the end of 2 years.

11 Find the amount and the interest on Rs. 16000 for 3 years at 5% per annum compounded annually. 12 A sum of money amounts to Rs. 11910.16 in years at 12% per annum interest being compounded semi annually. Find the sum. 14 The population of a city increases by 4% of what it had been at the beginning of each year. If the population in 1997 had been 6760000, find the population of the city in (i) 1999 (ii) 1995. 15 Find the compound interest on Rs. 6400 for 2 years compounded annually at % per annum.