The population of a city is 250000. It is increasing at the rate of 2% every year. The growth in the population after 2 yr is?

Q: The population of a city is 250000. It is increasing at the rate of 2% every year. The growth in the population after 2 yr is?

Population after 2 yr = P (1 + R/100)2 = 250000 (1 + 2/100)2 ⇒ 250000 x (51/50) x (51/50) = 260100 ∴ Growth = 260100 - 250000 = 10100

2500
10000
252000
10100

Correct Answer: 10100

Explanation:

Population after 2 yr
= P (1 + R/100)²
= 250000 (1 + 2/100)²
⇒ 250000 x (51/50) x (51/50) = 260100
∴ Growth = 260100 - 250000 = 10100

More Questions from Percentage

In a school, 10% of boys are equal to the one - fourth of the girls. What is the ration of boys and girls in that school?
Income of Suman is first increased by 7% and then it is decreased by 7%. What is the change in her income?
48% of the 1st number is 60% of the 2nd number. What is the ratio of the 1st number to the 2 nd number?
The sum of 15% of a positive number and 20% of the same number is 126. What is one-third of that number
In a test, A scored 10% more than B and B scored 5% more than C. If C scored 300 marks out of 400, then A's marks are
Mathew scored 42 marks in Biology, 51 marks in Chemistry, 58 marks in Mathematics, 35 marks in Physics and 48 marks English. The maximum marks, a student can score in each subject, are 60. How much overall percentage did Mathew get in this exam?
A student was asked to measure the length and breadth of a rectangle. By mistake, he measured the length 20% less and the breath 10% more. if its original area is 200 sq cm, then find the area after this measurement?
A box has 100 blue balls, 50 red ballss and 50 black balls. 25% of blue balls and 50% of red balls are taken away. Then, percentage of black balls at present is?
The price of two article are as 3 : 4. If the price of the first article is increased by 10% and that if the second by ₹ 4 one original ratio remains the same. The original price of the second article is
from 2008 to 2009, the sales of a book decreased by 80%. If the sales in 2010 was the same as in 2008, by what per cent did it increase from 2009 to 2010?

Discussion & Comments

No comments yet. Be the first to comment!