The Population of a town decreased by 12% during 1998 and then increased by 8% during 1999. Find the population of the town, at the beginning of 1998, if at the end of 1999 its population was 285120. Class 9 | Compound Interest

 

According to a census taken towards the end of the year 2009, the population of a rural town was found to be 64000. The census authority also found that the population of this particular town had a growth of 5% per annum. In how many year after 2009 did the population of this town reach 74088 ? Class 9 | Compound Interest

 

Mohit borrowed a certain sum at 5% per annum compound interest and cleared this loan by paying Rs. 12600 at the end of first year and Rs. 17640 at the end of second year. Find the sum borrowed. Class 9 | Compound interest

 

Divide Rs. 28730 between A and B so that when their shares are lent out at 10 per cent compounded interest compounded per year, the amount that A receives in 3 years is the same as What B receives in 5 years. Class 9 | Compound Interest

 

Find the difference between the compound interest compounded yearly and half yearly on Rs 10000 for 18 months at 10% per annum Class 9 | Compound Interest

 

A person invests ₹ 5,000 for three years at a certain rate of interest compounded annually. At the end of two years this sum amounts to ₹ 6,272. Calculate : (i) the rate of interest per annum. (ii) the amount at the end of the third year. Class 9 | ICSE | Compound Interest

 

At what rate per cent compound interest, does a sum of money become 1.44 times of itself in 2 years ? Class 9 | ICSE | Compound Interest

 

Answer: 20%

Rs 10 is difference between compound interest and simple interest 2 year and at 5% per annum. Find the prenciple amount.

 

Calculate the compound interest for the second year on Rs. 8,000 /- invested for 3 years at 10 % per annnum.

 

Class 9 Math Test Ch 1,2,3,4,5,7 FM 35

 

Class 8 | Compound Interest | Mr. Sharma lends Rs 24000 at 13%p.a. Simple interest and an equal sum at 12%p.a. Compound interest. Find the total interest earned by him in 2 years.

 

The simple interest on a certain sum computes to Rs600 in 3 yeas and the compound interest on the same sum at the same rate for 2 years computes to Rs 410. Find the rate percent.

 

Class 9 First Unit Test Math ch 2,3,4, Physics ch 2 Motion in 1D FM 30

ANSWER

Mathematics: 

1. On a certain sum, the compound interest in 2 years amounts to Rs. 4240. If the rates of interest for successive years are 10% and 15% respectively, find the sum.

2. A man borrow Rs. 10,000 at 5% per annum compound interest. He repays 35% of the sum borrowed at the end of the first year and 42% of the sum borrowed at the end of the second year. How much must be pay at the end of the third year in order to clear the debt?

3. Class 9 Math ICSE SELINA compound interest EX 3B question 3 A sum of money lent out at C.I. at a certain rate per annum becomes three times of itself in 8 years. Find in how many years will the money becomes twenty-seven times of itself at the same rate of interest p.a.

4. Math Question Class 9 The value of the machine depreciated by 10% per year during the first two year and 15% per year during third year. Express the total depreciation of the machine, as percent, during the three years

5. Class 9 Math ICSE SELINA EXPANSION EX 4B question 16 If 4x^2+y^2=a and xy =b find the value of 2x+y

6. Class 9 ICSE Selina Math EX 4E question 5(i)

7.  Prove that x^2+y^2+z^2 -xy-yz-zx always positive

 

On a certain sum, the compound interest in 2 years amounts to Rs. 4240. If the rates of interest for successive years are 10% and 15% respectively, find the sum.

 

A man borrow Rs. 10,000 at 5% per annum compound interest. He repays 35% of the sum borrowed at the end of the first year and 42% of the sum borrowed at the end of the second year. How much must be pay at the end of the third year in order to clear the debt?

 

Class 9 Compound Interest | Ankit Invest a certain some of money at 20% per annum compounded yearly, Geeta invest same amount of money at same rate per annum compounded half yearly. if Geeta get Rs. 33 more than Ankit at the end of 18 month. Find the amount of money They invested. Class 9 Compound interest

 

Answer:  3000

Class 9 CI , Factorization and Midpoint Theorem Test FM 30

 

Q3) 

Ankit Invest a certain some of money at 20% per annum compounded yearly, Geeta invest same amount of money at same rate per annum compounded half yearly. if Geeta get Rs. 33 more than Ankit at the end of 18 month. Find the amount of money They invested. Class 9 Compound interest

A sum of money Invested at compound interest amount to 19360 in 2 year and to 23425.60 in 4 years. Find the rate percent and the original sum of money.

 

ANSWER: SUM= 16000 Rate= 10%

Class 8 SI and CI written test FM 25

 

Class 8 SI and CI MCQ FM 30