Question

(A) 5%
(C) 210
(B) 6%
289. The population of a city increases 10% every year. If the present
population of the city is 10,000, what will be the population after 4
years?
(A)
(A) 14641
(B) 10778
(C) 14569 (D) 12689
Shyam and Mohan so that the ratio of​

Answer 1

Answer:

The present population of a city is 3,02,500. If the population increases by 10% every year, what was the population of the city two years ago?

MEDIUM

ANSWER

Let the population before two years ago be x

Given the population increases by 10%

So increase in population after one year is

100

10

×x=0.1x

So population after one year is x+0.1x=1.1x

Increase in population after another one year is

100

10

×1.1x=0.11x

So population at present is 1.1x+0.11x=1.21x

But given population at present is 3,02,500

⟹1.21x=302500

⟹x=

1.21

302500

=2,50,000

Population of city two years ago is 2,50,000