M. Tyra Solutions for Chapter: Simple Interest, Exercise 1: Exercises

The simple interest on a certain sum at a certain rate is $\frac{9}{16}\mathrm{th}$ of the sum. If the number representing rate per cent and time in years be equal, then the time is _____.

$₹16000$ was invested for three years, partly in scheme A at the rate of $5\%$ simple interest per annum and partly in scheme B at the rate of $8\%$ simple interest per annum. The total interest received at the end was $₹3480$. The amount of money was invested in scheme A is $₹$_____

A took a certain sum as loan from bank at a rate of $8\%$ simple interest per annum. A lends the same amount to B at $12\%$ simple interest per annum. If at the end of five years, A made a profit of $₹800$ from the deal, the original sum (in rupees) is _____

The interest earned when $₹\mathrm{P}$ is invested for five years in a scheme offering $12\%$ p.a simple interest is more than the interest earned when the same sum ($₹\mathrm{P}$) is invested for two years in another scheme offering $8\%$ p.a simple interest, by $₹1100$. The value of $\mathrm{P}$ is $₹$_____

Mr Phanse invests an amount of $₹24200$ at the rate of $4\%$ p.a for $6$ years to obtain a simple interest. Later he invests the principal amount as well as the amount obtained as simple interest for another $4$ years at the same rate of interest. What amount of simple interest will be obtained at the end of the last $4$ years?

According to a new plan rolled out by HISP Bank, the rate of simple interest on the sum of money is $8\%$ pa for the first two years, $10\%$ pa for the next three years and $6\%$ pa for the period beyond the first five years. The simple interest accrued on a sum for a period of eight years is $₹12,800$. Find the sum.

Ravi invested $₹\mathrm{P}$ in a scheme A offering simple interest at $10\%$ pa for two years. He invested the whole amount he received from scheme A in another scheme B offering simple interest at $12\%$ pa for five years. If the difference between the interests earned from schemes A and B was $₹1300$,the value of $P$ is $₹$_____

Nikhilesh invested a certain amount in three different schemes A, B and C with the rate of interest  $10\%$ p.a, $12\%$ p.a and $15\%$ p.a respectively. If the total interest accrued in one year was $₹3200$ and the amount invested in scheme C was $150\%$ of the amount invested in scheme A and $240\%$ of the amount invested in scheme Bthe amount invested in scheme B is $₹$_____