The population of a town is 7900. It decreases annually at the rate of 10% p.a. What was its population 2 years ago?
Choose one.
A) 9750  B) 8000  C) 8500  D) 9500  E) 10000
Formula :   ( 9750fter =100 denominator   9750go = 100 numerator)   7900 Ã— 100/90 Ã— 100/90 = 9753   9750)
<result>A</result>
The population of a town is 7900. It decreases annually at the rate of 10% p.a. What was its population 2 years ago?