Ajay Kumar Solutions for Chapter: Numerical Ability, Exercise 6: Practice set

A sum of $₹12500$ amounts to $₹15500$ in $4$ years at the rate of simple interest. What is the rate of interest?

Divesh invested amounts in two different schemes A and B for five years in the ratio of $5:4$ respectively. Scheme 'A' offers $8\%$simple interest and bonus equal to$20\%$ of the amount of interest earned in $5$ years of maturity. Scheme 'B' offers $9\%$simple interest. If the amount invested in scheme 'A' was $₹20000$ then, what was the total amount received on maturity from both the schemes?

The salary of Nitin increases every year in April by $15\%$. If his salary in July $2007$ was$₹20000$, what was his salary in September $2009$?

Preetam borrowed some money at the rate of $4\%$ per annum for the first three years, at the rate of $8\%$ per annum for the next two years and at the rate of $9\%$ per annum for the period beyond $5$years. If he pays a total simple interest of $₹19550$ at the end of $7$years, how much money did he borrow?

Simple interest on a certain sum is$\frac{9}{16}$ of the sum. What is the rate per cent and time (in years) if both are equal?

What will be the difference in simple and compound interest at the rate of $12\%$ per annum on a sum of $Rs.960$ after $2$years?

A certain sum of money amounts to $Rs.704$ in $2$years and $Rs.800$ in $5$years. Find the principal:

Bijendra invests a sum of money at the rate of$10\%$per annum, then in how many years it will become thrice?