Question : The compound interest on Rs. 30000 at 7% per annum for $n$ years is Rs. 4347. The value of $n$ is:

Option 1: $3$ years

Option 2: $2$ years

Option 3: $4$ years

Option 4: $5$ years

Question : A sum of Rs. 2000 amounts to Rs. 4000 in two years at compound interest. In how many years will the same amount become Rs. 8000?

Option 1: 2 years

Option 2: 4 years

Option 3: 6 years

Option 4: 8 years

Question : A sum of Rs. 3000 amounts to Rs. 6000 in two years at compound interest. The interest for four years is:

Option 1: Rs. 9000

Option 2: Rs. 12000

Option 3: Rs. 6000

Option 4: Rs. 3000

Question : In 3 years, Rs. 3000 amounts to Rs. 3993 at $x$% compound interest compounded annually. The value of $x$ is ___.

Option 1: $10$

Option 2: $8$

Option 3: $5$

Option 4: $3\frac{1}{3}$

Question : A sum of Rs. 3200, invested at 10% p.a. compounded quarterly, amounts to Rs. 3362. Compute the time.

Option 1: $\frac{1}{2}$ year

Option 2: $1$ year

Option 3: $2$ years

Option 4: $\frac{3}{4}$ year