L Mohan Lal Solutions for Exercise 1: PREVIOUS QUESTIONS

If the simple interest on a sum of $Rs. 10,000$ at $15\%$ per annum is $Rs. 7,500$. Find out the time period?

A certain sum is lent at $11\%$ per annum simple interest for $6$ years. The interest received is less than the sum by $Rs. 2,720$. What is the sum?

How many years it will take for a sum of money to grow from $Rs. 5,000$ to $Rs. 9,000$. If it is invested at $12\%$p.a. simple interest?

$Rs. 5,000$ is doubled in $5$ years at some rate of interest. Find out the rate of interest, if it is deposited for simple interest?

A sum of money invested for some years at $8\%$ p.a. simple interest grows to $Rs. 930$. The same sum of the money invested for the same number of years at $4\%$ p.a. simple interest grows to $Rs. 840$. What was the sum invested (in $Rs.$)?

A father fixed deposit some amount at $12\%$ p.a. simple interest in his daughter's, name, when she was $16$ years old. If she received $Rs. 4,30,000$ at her $22$ years age. How much amount was deposited by her father (in $Rs.$)?

How much simple interests will $Rs. 2,000$ earn in $18$ months at $6\%$ per annum? (in Rupees)

A sum of money amounts to $Rs. 5,200$ in $5$ years and to $Rs. 5,680$ in $7$ year at simple interest. The rate of Interest per annum is: