Question

द पॉपुलेशन ऑफ विलेज इन द ईयर ऑफ 2012 ऑफ 205450 एंड एंड इन टू द पॉपुलेशन ऑफ टूल 17777 व्हाट इज द परसेंटेज इंक्रीज ओर डिक्रीज इन द माइग्रेशन ऑफ पीपल इन द ईयर 2003​

Answer 1

Answer:

Population of a city at the starting of first year =5000

It increases by 10% in 1

st

year.

i.e., Population at the end of 1

st

year = Population at the starting of 2

nd

year =5000+10% of 5000=5000+

100

10

×5000=5500

It decreases by 20% in 2

nd

year.

i.e., Population at the end of 2

nd

year = Population at the starting of 3

rd

year =5500−20% of 5500=5500−

100

20

×5500=5500−1100=4400

It increases by 30% in 3

rd

year.

i.e., Population at the end of 3

rd

year =4400+30% of 4400=4400+

100

30

×4400=4400+1320=5720

So, C is the correct option.