MEDIUM
8th CBSE
IMPORTANT
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The population of a town increases by 312% of its value at the beginning of each year. If the present population of the town is 8869743, find the population of the town three years ago.

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Important Questions on Comparing Quantities III Compound Interest

MEDIUM
8th CBSE
IMPORTANT
Number Magic a textbook of Mathematics 8>Chapter 15 - Comparing Quantities III Compound Interest>EXERCISE>Q 4
In how many years will the population of the town change from 15625 to 17576 if the rate of interest is 4% per annum ?
MEDIUM
8th CBSE
IMPORTANT
Number Magic a textbook of Mathematics 8>Chapter 15 - Comparing Quantities III Compound Interest>EXERCISE>Q 5
The local government of a state has fixed that a certain percentage of villages, at the beginning of each year will be provided with TV sets in their community centres. The number of TV sets provided increased from 2500 in 2011 to 2601 in 2013 calculate the rate of growth of TV sets in villages in the state.
MEDIUM
8th CBSE
IMPORTANT
Number Magic a textbook of Mathematics 8>Chapter 15 - Comparing Quantities III Compound Interest>EXERCISE>Q 6
A motorcycle was purchased for ₹48000. If its value depreciates every year by 10%, calculate the total depreciation in its value at the end of 3 years. 
MEDIUM
8th CBSE
IMPORTANT
Number Magic a textbook of Mathematics 8>Chapter 15 - Comparing Quantities III Compound Interest>EXERCISE>Q 7
A car is purchased for ₹360000. Its value depreciates at 10% per annum during the first two years and at 20% per annum during the third year. What will be its value after 3 years.
MEDIUM
8th CBSE
IMPORTANT
Number Magic a textbook of Mathematics 8>Chapter 15 - Comparing Quantities III Compound Interest>EXERCISE>Q 8
The value of a car depreciates at 10% per annum. It was purchased 3 years ago. If its present value is ₹364500, for how much it was purchased.
MEDIUM
8th CBSE
IMPORTANT
Number Magic a textbook of Mathematics 8>Chapter 15 - Comparing Quantities III Compound Interest>EXERCISE>Q 9
In a city there were 8000 blood donors. As a result of blood donation camps organised by various schools in that city, the number of blood donors registered an increase of 20% per annum. Find the total number of new donors registered during the next 112 years.
MEDIUM
8th CBSE
IMPORTANT
Number Magic a textbook of Mathematics 8>Chapter 15 - Comparing Quantities III Compound Interest>EXERCISE>Q 10
The bacteria in a culture grows by 5% in first hour and increases 10% in the second hour. If the count of the bacteria in a sample is 2500000, what will be the count of bacteria after 2 hours.