Question

The population of town increases by $5\%$ every year. If the population is $94,500$ now, what was its population one year ago?

Answer 1

Let the Population one Year ago be $x$

So After 1 Year this Population will be incrrased by 5% and will become 94,500

$x+\frac{5}{100}x=94,500\Rightarrow \frac{105}{100}x=94,500\Rightarrow x=\frac{94500\ast 100}{105}=90,000$

Hence, the Population one Year ago was $90,000$