Question

047. The population of a city was 3000. It was
increased by 4% in the first year and then
decreased by 3% in next year. What was
the total population at the end of two years?
(A) 3208
(B) 3228
(C) 2028
(D) 3026 ​

Answer 1

Answer:

thanks for the freeeeeeeeeeeeeeeeeee points

Answer 2

Given:

The population of a city was 3000. It was increased by 4% in the first year and then decreased by 3% in the next year.

To Find:

What was the total population at the end of two years?

(A) 3208

(B) 3228

(C) 2028

(D) 3026 ​

Solution:

It is given that the population of a city is 3000 and then it was increased by 4% in the first year, which will be equal to,

1st-year population,

[tex]Population=3000+4\%*3000\\ =3000+120\\ =3120[/tex]

Now in the 1st year, we have a population of 3120 which was in the 2nd year decreased by 3%, then the population will be equal to,

2nd-year population,

[tex]Population=3120-3\%*3120\\ =3120-93.6\\ =3026.4\\ \approx 3026[/tex]

So the population at the end of 2nd-year is 3026.

Hence, the correct option is (D).