Exercise 10.51 A motorbike costs 71,000 in July 2002. Its value depreciates by 10% per annum.Find its value after 6 years.2 The population of a town is increasing at the rate of 5%. What will be thepopulation of the town on this basis after 2 years if the present populationis 16,000?3 A town has a population of 54,678 in January 2017. A decrease in population atthe rate of 8% p.a. is expected after January 2017. What will be the expectedpopulation in January 2019? Also, find the population decrease.4 The population of a city in July 2008 was 98,979 people. The city experienced anannual average rate of compound increase of 7% p.a. What was the population inJuly 2004?5 Machinery worth 2,56,300 depreciates at a rate of 12% p.a. How much is it worthafter 6 years if the rate of depreciation is compounded annually?JMMARYpound interest is the interest calculated on the previous year's amount (A = P + 1).​