# Chapter 6 | Compound Interest | Class-8 DAV Secondary Mathematics

Are you looking for DAV Maths Solutions for class 8 then you are in right place, we have discussed the solution of the Secondary Mathematics book which is followed in all DAV School. Solutions are given below with proper Explanation please bookmark our website for further updates!! All the Best !!

## Compound Interest|| Unit 6 Worksheet 4

1. The population of a town is increasing at the rate of 8% p.a. What will be the population of the town after 2 years if the present population is 12,500?

2. Three years ago, the population of a town was 50,000. If the annual increase during three successive years was at the rate 4%. 5% and 4% p.a. respectively, find the present population.

3. The profits of a firm were ₹ 72,000 in the year 2005. During the next year, it increased by 7% and it decreased by 5% in the following year. What are the profits of the firm after 2 years?

4. The population of a town is 64,000. If the annual birth rate is 10.7% and the annual death rate is 3.2%, calculate the population after 3 years. (Hint: Net growth rate = (Birth rate — Death rate)%)

5. In a factory, the production of motor bikes was 40,000 in a particular year, which rose to 48,400 in 2 years. Find the rate of growth per annum, if it was uniform during 2 years.

6. Madhu bought a house for ₹ 1,31,25,000. If its value depreciates at the rate of 10% p.a., what will be its sale price after 3 years?

7. A builder employed 4,000 workers to work on a residential project. At the end of the first year, 10% workers were removed, at the end of the second year, 5% of those working at that time were retrenched. However, to complete the project in time, the number of workers was increased by 15% at the end of the third year. How many workers were working during the fourth year?