Q1:

A sum of money becomes $\frac{5}{\mathrm{4 }}$of it in 2 years at a certain rate of simple interest. Find the rate per annum.

Q2:

Aman lent ₹ 2000 each to Amit and Rakesh. After 2 years the difference of simple interests received from both sources is found to be ₹ 32.8. The difference between their rates of interest will be:

Q3:

What sum of money, considering simple interest, will amount to ₹ 896 in 3 years, and ₹ 960 in 5 years?

Q4:

Equal sum of money are lent to A and B at 2.7% per annum simple interest for 2 and 4 years respectively. If the difference in interest paid by them is ₹ 135, find the sum that was lent to each.

Q5:

Paul invests money in three different schemes for 2 years, 4 years and 6 years at 8%, 10% and 12% simple interest respectively. After completion of each scheme he gets same interest. Find the ratio of his investments.

Q6:

Difference between the compound interest (compounded annually) and simple interest on a sum of ₹ 4900 at a certain rate for 2 years is ₹ 100. Find the rate.

Q7:

Find compound interest on a sum of ₹ 8000 for 9 months at 20% per annum, if the interest is being compounded quarterly.

Q8:

If the compound interest on a certain sum is ₹ 520 for 2 years at $16\frac{2}{3}$% per annum, what will be the simple interest on that sum in 3 years at the same rate of interest?

Q9:

A sum in invested at 20% compound interest, compounded annually. In two years it would have fetched ₹ 60.25 more if the interest was compounded half yearly. Find the sum.

Q10:

The simple interest on a sum of money for 2 years at 8% is ₹ 800. The compound interest for the same sum at the same rate for 3 years will be approximately:

Q11:

A scheme offers compound interest at the rate of 5% pa, compounded half-yearly. If a man invests ₹ 14000 each on 1st January and 1st July, what will be the total interest earned by him at the end of the year?

Q12:

A sum of ₹ 12800 gives an interest of ₹ 3400 in ‘t’ years at the rate of interest $12\frac{1}{2}$% compounded annually. Find t.