Question

The population of the city was 20000 in the year 1997 it increases at the rate of 5% per annum find the population of

Answer 1

Answer:

A = P(1+ R/100)N

Initial population of the city (P) = 20,000

Rate of increase (R) = 5% pa

N (number of years) =3

Population of the city after 3 years = A

A = 20000(1+5/100)³

    = 20000(105/100)³

   = (20000*105*105*105)/(100*100*100)

A = 23152.5

So, population of city after 3 years = 23152.5

Answer 2

Answer:

Step-by-step explanation:

total population in 1997 = 20000

so, 5% of 20000 = 5÷100×20000

                            =1000

therefore 5% of 20000 = 1000

next year the population = total population + 5% population

                                        = 20000 + 1000

                                        = 21000

so the population is 21000