Simple Interest and Compound Interest

Simple Interest and Compound Interest Type 1: Based on Simple Interest and Compound Interest Mixed A.

Find the Compound Interest in each of the following cases by tabulation Method:

1.

For two years: a. Rs 8000 @ 10% p.a. For three years: a. Rs 7000 @ 10% p.a. For four years: a. Rs 9000 @ 10% p.a. For five years: Rs 2,00,000 @ 10% p.a.

2. 3. 4.

b. Rs 6000 @ 15% p.a.

c. 2000 @ 5% p.a.

b. Rs 4000 @ 15% p.a.

c. 4000@ 5% p.a.

b. Rs 6000 @ 5% p.a.

c. 20000@20% p.a.

B.

Questions Based on differences:

1.

Find the difference between the SI and CI on Rs 12000 @ 10% for 2 years.

2.

Find the difference between the SI and CI on Rs 15000 @ 5% for 3 years.

3.

If the difference between the SI and CI is Rs 90 @ 15% per annum. Then Find: a. Principal b. SI for 10 years c. CI for 3 years If the difference between the SI and CI is Rs 40 @ 10% per annum, then find the compound interest in the year. If the difference between the SI and CI is Rs 60 @ 5% per annum, then find the difference between the SI and CI in the third year If the difference between the SI and CI is Rs 1152 @ 20% per annum for three years. Find the Principal.

4. 5. 6. 7. 8.

If the ratio of difference between SI and CI for three years to that of two years is 25 / 8, find the rate (%). Given, the difference between the simple interest and the compound interest for 2 years on the same sum and at the same rate of interest is Rs 120. The difference between the simple interest and the compound interest for 3 years on the same sum and at the same rate of interest is Rs 366. Find the rate of interest.

C.

Some advanced problems:

1.

Simple Interest for two years is Rs 550 and Compound Interest for two years on the same principal is Rs 605. Find the rate and the Principal. Simple Interest for two years is Rs 300 and Compound Interest for two years on the same principal is Rs 315. Find the compound interest for the third year. A borrows Rs 5000 from B for 4 years at 10@ Simple Interest and he further lends it to C for 5 years at 5% per Compound Interest Find his net gain /loss in this transactions.

2. 3.

Type 2: Based on Simple Interest 1.

If a sum of money put at simple interest doubles in 7 years. In how many years it will become six times. a. 30 years b. 35 years c. 40 years d. 45 years

2.

If a sum of money becomes Rs 5200 in 3 years and Rs 6800 in 7 years. Find the sum of money. a. Rs 5000 b. Rs 4000 c. Rs 4400 d. Rs 4800

3.

What sum will fetch a simple interest of Rs 25,410 in five and a half years at 6% per annum rate of interest. a. Rs 55,000 b. Rs 88,000 c. Rs 77,000 d. Rs 70,000

4.

Find the present value of Rs 17,280 due 3 years from now at 20% simple interest. a. Rs 9000 b. Rs 11,600 c. Rs 12,000 d. Rs 10,800

5.

6.

Ramesh invested two equal amounts at simple interest. He invested one amount at 15% p.a. and the other at 20% p.a. The total interest earned at the end of the year was Rs 1400. Find the total amount invested by Ramesh. a. Rs 4,000 b. Rs 5,000 c. Rs 8,000 d. Rs 10,000 A sum of money , Rs 12000 doubles in three years. In nine years, it will become a. Rs 36,000 b. Rs 48000 c. Rs 64000 d. Rs 96,000