Answer:
By the end of 1980 there are 112,000 people in the city.
Step-by-step explanation:
Total number of people on January 1, 1980 = 100,000 people
Number of people died during the year = 1,000
So, during the year number of people alive
= Total people - Number of people who died
= 100,000 people - 1,000 people = 99,000 people
Now, number of babies born during the year = 3,000
So, during the year number of people alive
= Total people left + Number of babies born
= 99,000 people + 3,000 babies = 102,000 people
Number of people who move in during the year = 10,000
So, at the end of the year number of people in the country
= Total people present + Number of people who moved in
= 102,000 people + 10,000
= 112,000 people
or, the number of people present in the country = 112,000
Hence, by the end of 1980 there are 112,000 people in the city.
