Arihant Expert Team Solutions for Exercise 1: Practice Questions

What is the difference between the compound interest and simple interest accrued on an amount of $₹16200$ at the end of $3 \mathrm{years}$ at the rate of $25\%$? (Rounded off to two digits after decimal)

If the compound interest on a sum for $2 \mathrm{years}$ at $12.5\%$ be $₹3400$. The simple interest will be_____.

At what rate percent compound interest, a sum was $1.44$ times of itself in $5$ years, if it becomes $1.69$ times in $7$ years?

A loan of$₹50440$ at $5\%$ compound interest is to be paid in three equal annual instalments. What will be the amount of each annual instalment?

The simple interest on a certain sum for $2 \mathrm{years}$ is $₹120$ and compound interest is $₹129$. Find the rate of interest.

The population of a town is $126800$. It increases by $5\%$ in the first year and decreases by $20\%$ in the second year. What is the population of the town at the end of $2 \mathrm{years}$?

What's the difference between the simple and compound interest earned from a sum of $₹13033$ at a rate of $13$ percent per annum for a period of $3 \mathrm{years}$ (rounded off to $2$ digits after decimal)?

Arunavo invested total sum of $₹16000$ in two schemes $\left(\mathrm{A} \mathrm{and} \mathrm{B}\right)$ for two years. Scheme $\mathrm{A}$ offers compound interest (compounded annually) at the rate of $10\%$ per annum and scheme $\mathrm{B}$ offers simple interest at the rate of $12\%$ per annum. If the total interest earned by him from both the schemes after two years is $₹3504$. How much money (principal) did he invest in scheme $\mathrm{B}$?