Question

The population of a town increases at the rate of 3.7 % each year. It is 31,110 now. What was it last year?

Answer 1

last year it was x and now it is 31110 so value of x is 30000

Answer 2

Answer: 30,000

Step-by-step explanation:

Let the population of the town was in last year = x

As given in question population is increasing by 3.7%

Population now = 31110

Therefore

$x+ 3.7\% \text { of } x= 31110\\\\\Rightarrow x+\dfrac{3.7}{100} \times x= 31110 \\\\\Rightarrow x+\dfrac{37}{1000} x= 31110\\\\\Rightarrow \dfrac{1000+37}{1000} x= 31110 \\\\\Rightarrow x= 30000$

Hence, the population was 30,000 last year