Question

the population of a city was 120000 in the year 2013 during next year it increased by 6% but due to an epidemic it decrease by 5% in the following years what was it population in the year 2015

Answer 1

Answer:

120840

Explanation:

In the year 2014, 120000*(1.06)= 127200

In the year 2015, 127200*(0.95)= 120840

Formula used: Future value = present value*(1+r)

r is negative when population decreases.

Answer 2

Answer:

in year 2014 population increase by 6% therefore 120000+6%=127200

in year 2015 population decrease by 5% from 2014

therefore 5%-127200=120840

hence population in year 2015 was 120840