Abhijit Guha Solutions for Chapter: Simple Interest, Exercise 2: Practice Problems Level 2

A person invests money in three different schemes for $6$ years, $10$ years and $12$ years at $10$ per cent, $12$ per cent and $15$ per cent simple interest, respectively. At the completion of each scheme, he gets the same interest. The ratio of his investment is

A certain sum of money at certain rate of interest becomes $₹ 3,420$ after $2$ years and at the same rate after two and a half years becomes $₹ 3,525$. Find the rate per cent per annum.

With a given rate of simple interest, the ratio of principal and amount for a certain period of time is $4:5$. After $3$ years, with the same rate of interest, the ratio of the principal and amount becomes $5:7$. The rate of interest is

A man deposits $₹ 5,600$ in a bank at $3\frac{3}{4}\%$ annual interest. After $6$ months, he withdraws $₹ 3,200$ together with interest and after $6$ months he withdraws the remaining money. How much does he get as interest?

A person invested some amount at the rate of $12$ per cent simple interest and the remaining at $10$ per cent. He received yearly an interest of $₹ 130$. Had he interchanged the amounts invested, he would have received an interest of $₹ 134$ . How much money did he invest at different rates?

The simple interest on a sum of money for $10$ years is $₹ 3,130$. If the principal becomes $5$ times after $5$ years, what will be the total interest obtained after $10$ years?

Ankita borrows $₹ 7,000$ at simple interest from a lender. At the end of $3$ years, she again borrows $₹ 3,000$ and settled that amount after paying $₹ 4,615$ as interest after $8$ years from the time she made the first borrowing. What is the rate of interest?

A sum of $₹ 850$ is lent in the beginning of a year of a certain rate of interest. After $8$ months, a sum of $₹ 210$ more is lent but at the rate twice the former. At the end of the year, $₹ 19.80$ is earned as interest from both the loans. What was the original rate of interest?