M L Aggarwal Solutions for Exercise 1: EXERCISE 2.1

Calculate the amount and the compound interest on $₹ 5000$ in $2$ years when the rate of interest for successive years is $6\%$ and $8\%$ respectively.

A sum of $₹9600$ is invested for $3$ years at $10\%$ per annum at compound interest.Find the difference between the sum at the end of first and second year and find the interest on this sum for one year.

A sum of $₹9600$ is invested for $3$ years at $10\%$ per annum at compound interest. Hence, write down the compound interest for the third year. 

The simple interest on a certain sum of money for $2$ years at $10\%$ per annum is$₹1600$.Find the amount due and the compound interest on this sum of money at the same rate after $3$ years, interest being reckoned annually.

Vikram borrowed $₹20000$ from a bank at $10\%$ per annum simple interest. He lent it to his friend Venkat at the same rate but compounded annually. Find his gain after $2\frac{1}{2}$ years.

A man borrows $Rs 6000$ at $5\%$ compound interest. If he repays $Rs 1200$ at the end of each year, find the amount outstanding at the beginning of the third year.

Mr. Dubey borrows $₹100000$ from State Bank of India at $11\%$ per annum compound interest. He repays $₹41000$ at the end of first year and $₹47700$ at the end of second year. Find the amount outstanding at the beginning of the third year.

Jaya borrowed $₹50000$ for $2$ years. The rates of interest for two successive years are $12\%$ and $15\%$ respectively. She repays$₹33000$ at the end of first year. Find the amount she must pay at the end of second year to clear her debt.