Bissoy.com
Doctors Medicines MCQs Q&A

The present population of a town is 80000. For the next two years the population increases by 5% and in the 3rd year, population decreases by 8%. Then what will be the population of the town after 3 years?

The present population of a town is 80000. For the next two years the population increases by 5% and in the 3rd year, population decreases by 8%. Then what will be the population of the town after 3 years? Correct Answer 81144

Given:

Present population of the town = 80000

Population: 1st and 2nd year = 5% increase, 3rd year = 8% decrease

Formula:

New value = (100 + x)/100 × Actual Value                 (x = percent by which value is increased)

Calculation:

Population of the town after 1st year = 80000 + 80000 × 5/100 = 84000

⇒ Population of the town after 2nd year = 84000 + 84000 × 5/100 = 88200

∴ Population of the town after 3rd year = 88200 – 88200 × 8/100 = 81144

Related Questions

Ms. Rahena needs to get from Town C. The only was to get Town C is taka a bus from Town A to Town B and then take a train from Town B to C. The bus leaves Town A at 8.00 am and reaches Town b after 212 hours. The first train leaves Town B at 9.00 am and then there is a train every 50 minutes. The train reaches Town C 40 minutes after its departure . If Ms. Rehana leaves Town A at 8.00 am, When is the earliest she would arrive at Town C?
Given below are quantities named A,B and C. Based on the given information, you have to determine the relation between the quantities. You should use the given data and your knowledge of mathematics to choose among the possible answer. Akash’s present age is six years less than Badshah’s age after nine years. The ratio of present age of Badshahand RAFTAAR is 5:9. Raftaar is 21 years younger than Denny and Denny is three years older than Honey. Square of the Honey’s present age is 1350 more than 15 times of Honey’s present age? Quantity A: What is the difference between AKASH’s present age and HONEY’s age after 16 years? Quantity B: After 6 years Mankirat’s age is twice that of Akash’s present age. Diljeet’s present age is 3.5 times of 25% of sum of present age of Mankirat and A. What is the present age of Diljeet? Quantity C: Twice of A’s present age is eight years more than that of Babbu’spresent age, then find the Babbu’s present age?
The population of college after 4 years is 8228. The population of college is in the first year increases by 10%, decreases by 15% in the second year, increases by 10% in the third year and decreased by a certain percentage in the fourth year. The total population of college in the first year and after four years is 18228. Find the percentage by which the population gets decreased in the fourth year.
There are two towns A and B, whose populations are in the ratio 20 : 27. Next year the population of town A increases by 25000 but the population of town B doesn’t change. Now the ratio of populations of the town A and B becomes 25 : 27. Find the population of town A after increment.
How is the rate of transpiration affected by decreasing humidity and by decreasing light intensity?   Decreasing humidity  Decreasing light intensity   (a).  Decreases Decreases  (b). Increases Decreases  (c). Increases Increases  (d). Decreases Increases
The population of the town increases at the rate of 17% per year, If the population of the town after two years will be 616005, then what is the present population of the town?
The population of a town increases by 5% in the first year, by 6% in the second year and by 8% in third year. The present population of town is 120204. What was the population of the town 3 years ago?
Suresh opened his factory in 2003.The production of his factory increases for two consecutive years consistently by 12% and in the third year it decreases by 8%. Again in the next two years it increases by 12% each year and decreases by 8% in the third year. What will be the effect on the production of the Company in 2007?
The population of the town increases 12% every year. What is the population of the town after two years if the present population of the town is 60,000?
Engines are rated at specified conditions. Then which of the following statements are correct? 1. Power developed increases as local temperature increases. 2. Power developed increases as local temperature decreases 3. Power developed is not dependent on local temperature. 4. Power developed increases as local atmospheric pressure increases. 5. Power developed increases as local atmospheric pressure decreases.