At what rate percent will a sum of ₹ 8400 yield ₹ 861 as compound interest in 2 years

Multiple Choice Questions

21.

A sum of money, deposited at some rate per cent per annum of compound interest, doubles itself in 4 years. In how many years will it become 16 times of itself at the same rate?

• 16

• 12

• 10

• 10

A.

16

x   - 2x  - 4 yrs
2x - 4x -  8 years
4x - 8x - 12 years
8x - 16- 16 years 

155 Views

22.

If a sum of money placed at compound interest, compounded annually, doubles itself in 5 years, then the same amount of money will be 8 times of itself in

• 25 years

• 20 years

• 15 years

• 15 years

C.

15 years

Money 'x' becomes '2x' in 5 years
Money '2x' becomes '4x' in 10 years
Money  '4x' becomes '8x'  in 15 years.
Hence, 'x' becomes '8x' in 15 years.

202 Views

23.

The compound interest on ₹ 5,000 for 3 years at 10% p.a. will amount to

• ₹ 1,654

• ₹ 1,655

• ₹ 1,600

• ₹ 1,600

B.

₹ 1,655

Compound interest for 3 years is given by:

189 Views

24.

What sum will give ₹ 244 as the difference between simple interest and compound interest at 10% in 

• ₹ 40,000

• ₹ 36,000

• ₹ 32,000

• ₹ 32,000

C.

₹ 32,000

Shortcut Method:
As interest is compounded half-yearly. then,
Time (n) = 

541 Views

25.

If a sum of money compounded annually becomes 1.44 times of itself in 2 years, then the rate of interest per annum is

• 25%

• 22%

• 21%

• 21%

D.

21%

238 Views

26.The simple and compound interest on a sum of money for 2 year are Rs. 8400 and Rs. 8652 respectively. The rate of interest per annum is6%7.5%9%9%

A.

6%

Difference  = (8652 - 8400) = Rs 252

421 Views

27.

A sum of money at compound interest amounts to thrice itself in 3 years. In how many years will it be 9 times itself?

• 9

• 27

• 6

• 6

C.

6

'X' becomes '3X'  in 3 years,
∴  '3X' becomes ' 9X' in (3 + 3) = 6 years.

322 Views

28.

An amount of money at compound interest grows up to ₹ 3,840 in 4 years and up to ₹ 3,936 in 5 years. Find the rate of interest.

• 2.5%

• 2%

• 3.5%

• 3.5%

A.

2.5%

Required rate of interest:

404 Views

29.

What is the difference between the compound interest and simple interest on Rs. 4000 at 5% per annum for 2 years?

• 10

• 11

• 20

• 20

A.

10

Difference
   

134 Views

30.

A sum of ₹ 3,200 invested at 10% p.a. compounded quarterly amounts to ₹ 3,362. Compute the time period.

• 

• 1 year

• 2 years

• 2 years

A.

263 Views

At what rate percent will a sum of ₨ 4000 yield ₨ 1324 as compound interest in 3 years?

At what rate percent will a sum of ₹ 4000 yield compound interest of ₹ 410 in 2 years?

At what rate will a sum of ₹ 50000 yield compound interest of ₹ 5582.25 in 2 years?

At what rate of compound interest will Rs 1200 become Rs 1348.32 in 2 years?