Question

9. The population of a village declines by 5% every
year. If the present population of the village is 1444,
find the population of the village 2 years back.​

Answer 1

Answer:

let 1 year earlier population be x

x-5x/100=1444

100x-5x/100=1444

95x=144400

x=144400/95=28880/19=1520

now let 1year earlier population be y

y-5y/100=1520

95y/100=1520

95y=152000

y=152000/95=30400/19=1600

so population of the village two years back is 1600