Question

The population of a city is 125000. If the annual birth rate and death rate are 5.5percent and 3.5percent respectively,calculate the population of the city after 2 years.
Question of comparing quantities from class 8th

Answer 1

After one year,

previous population : 125000
No of births  : 5.5/100 * 125000 = 6875
No of deaths : 3.5/100 * 125000 = 4375

Net population is 125000 + 6875 - 4375
=>  127500

After the second year,

previous population : 127500
No of births : 5.5/100 * 127500 = 7012
No of deaths = 3.5/100 * 127500 = 4462

Net population  is 127500 + 7012 - 4462 
=>130050

Therefore answer is 130050

Answer 2

Answer:

130050 is the population of the city after 2 years