The present population of a city is 2100000. If it rises to 3935163 during next 4 years, then find u

M4maths Previous Puzzles

05 Feb 2018 Population

The present population of a city is 2100000. If it rises to 3935163 during next 4 years, then find uniform rate of growth in population.

OPtion

1) 15.5
2) 16.0
3) 17.0
4) 18.33
5) 16.5
6) 17.5
7) 16.33
8) 18.0
9) 17.33
10) None of these

Solution

Population after n years = P[1+R/100]^n
=> 3935163 = 2100000 [1+R/100]^4
=> 1.873887143 = [1+R/100]^4
=> [1+R/100] = 1.17
=> R = 17%

Correct Option: 3 Best Solution (0)