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14. Compound Interest
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Q6 of 89 Page 14

In a factory the production of scooters rose to 46305 from 40000 in 3 years. Find the annual rate of growth of the production of scooters.

Given,


Initial production of scooters = 40000


Final production of scooters = 46305


Time duration = 3 years


Let annual growth rate = R%


So,


=


=


=


=


=


Hence,


Annual growth rate of production of scooters = 5 %


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4

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.

5

There is a continuous growth in population of a village at the rate of 5% per annum. If its present population is 9261, what it was 3 years ago?

7

The annual rate of growth in population of a certain city is 8%. If its present population is 196830, what it was 3 years ago?

8

The population of a town increases at the rate of 50 per thousand. Its population after 2 years will be 22050. Find its present population.

Questions · 89
14. Compound Interest
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