R. S. Aggarwal Solutions for Chapter: Simple Interest, Exercise 3: Exercise

$₹\mathrm{xyz}$ was deposited at simple interest at a specific rate for $3$ years. Had it been deposited at $2\%$ higher rate, it would have fetched $₹360$ more. Find $₹\mathrm{xyz}.$

A man invests certain amount at $6\%$ per annum simple interest and another amount at $7\%$ per annum simple interest. His income from the interest after $2$ years was $₹348.$ The ratio of first amount to second is $4:5.$ Find the total amount invested.

How long will it take for a sum of money invested at $5\%$ p.a. at simple interest to increase its value by $40\%$?

On a certain sum, the simple interest at the end of $6\frac{1}{4}$ years becomes ${\frac{3}{8}}^{th}$ of the sum. The rate percent is _____.

A sum was invested for $3$ years at simple interest at a certain rate. Had it been invested at $4\%$ higher rate of interest, it would have fetched $₹600$ more. The sum is?

If a sum become double in $16 \mathrm{yr},$ how many times will it be in $8 \mathrm{yr} ?$

A banker lent $₹6000$ at $10\%$ and $₹5000$ at $12\%$ at the same time and for the same period of time. The banker received $₹2400$ as total interest on both loans. Find the period for which the banker had lent the amount?

A man lent a sum of money at the rate of simple interest of $4\%$. If the interest for $8$ years is $₹340$ less than the principal, then the principal is?