English

The population of a place increased to 54000 in 2003 at a rate of 5% per annum Find the population in 2001. - Mathematics

Advertisements
Advertisements

Question

The population of a place increased to 54000 in 2003 at a rate of 5% per annum Find the population in 2001.

Sum

Solution

It is given that, population in the year 2003 = 54,000

Therefore,

54000 = (Population in 2001)`(1 + 5/100)^2`

= 54000

Population in 2001 = `54000 xx 20/21xx20/21`

=  48979.59

Thus, the population in the year 2001 was approximately 48,980.

shaalaa.com
  Is there an error in this question or solution?
Chapter 8: Comparing Quantities - Exercise 8.3 [Page 134]

APPEARS IN

NCERT Mathematics [English] Class 8
Chapter 8 Comparing Quantities
Exercise 8.3 | Q 10.1 | Page 134

Video TutorialsVIEW ALL [1]

RELATED QUESTIONS

A scooter was bought at Rs 42,000. Its value depreciated at the rate of 8% per annum. Find its value after one year.


In how much time will a sum of Rs 1600 amount to Rs 1852.20 at 5% per annum compound interest?


The population of a city is 125000. If the annual birth rate and death rate are 5.5% and 3.5% respectively, calculate the population of city after 3 years.


Three years ago, the population of a town was 50000. If the annual increase during three successive years be at the rate of 4%, 5% and 3% respectively, find the present population.


The count of bacteria in a culture grows by 10% in the first hour, decreases by 8% in the second hour and again increases by 12% in the third hour. If the count of bacteria in the sample is 13125000, what will be the count of bacteria after 3 hours?


The population of a certain city was 72000 on the last day of the year 1998. During next year it increased by 7% but due to an epidemic it decreased by 10% in the following year. What was its population at the end of the year 2000?


Aman started a factory with an initial investment of Rs 100000. In the first year, he incurred a loss of 5%. However, during the second year, he earned a profit of 10% which in the third year rose to 12%. Calculate his net profit for the entire period of three years.


The production of a mixi company in 1996 was 8000 mixies. Due to increase in demand it increases its production by 15% in the next two years and after two years its demand decreases by 5%. What will be its production after 3 years?


The population of a city increases each year by 4% of what it had been at the beginning of each year. If the population in 1999 had been 6760000, find the population of the city in (i) 2001 (ii) 1997

The population of a city increases each year by 4% of what it had been at the beginning of each year. If the population in 1999 had been 6760000, find the population of the city in (i) 2001 (ii) 1997.

 

.


Ashish started the business with an initial investment of Rs 500000. In the first year he incurred a loss of 4%. However during the second year he earned a profit of 5% which in third year rose to 10%. Calculate the net profit for the entire period of 3 years.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×