Discuss Forum
1. The population of a village decreases at the rate of 20% per annum. If its population 2 years ago was 10000, the present population is=?
- A. 4600
- B. 4600
- C. 4600
- D. 4600
Answer: Option B
Explanation:
To find the present population of the village, given that its population decreases at a rate of 20% per annum, and its population 2 years ago was 10,000, you can use the following calculation:
Calculate the population after the first year (1 year ago): Population after 1 year = 10,000 - (20% of 10,000) = 10,000 - 2,000 = 8,000
Calculate the present population (now): Population now = Population after 1 year - (20% of Population after 1 year) Population now = 8,000 - (20% of 8,000) = 8,000 - 1,600 = 6,400
So, the present population of the village is 6,400. Therefore, the answer is 6400.
Post your comments here: