# The Present Population of a Town is 1,15,200. If It Increases at the Rate of 6 2 0/O per Annum 1 Find Its Population After 2 Years - Mathematics

Sum

The present population of a town is 1, 15200.If it increases at the rate of 6 2/3% per annum , find

Its population after 2 years

#### Solution

Vn = 7 ' Vo= 115200 ; r = 6 2/3 % = 20/3 % ; t = 2 years

"V"_"n" = "V"_0 xx (1 + "r"/100)

"V"_"n" = 115200 (1 + 20/(100 xx 3))^2

"V"_"n" 1,15, 200 xx 1.06667 xx 1.06667

Vn= 1,31,072

The population 2 years later= 1, 31,072

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#### APPEARS IN

Frank ICSE Class 10 Mathematics Part 2
Chapter 1 Compound Interest
Exercise 1.7 | Q 5.1 | Page 25