Question : After deducting 20% from a certain sum, and then 10% from the remainder, there is INR 7,200 left. Find the original sum.
Option 1: INR 9,000
Option 2: INR 10,000
Option 3: INR 7,500
Option 4: INR 7,800
Correct Answer: INR 10,000
Solution : Let $x$ be the total money. First deduction = 20% of $x$ Money left after first deduction = 80% of $x$ = $\frac{4x}{5}$ Second deduction = 10% of $\frac{4x}{5}$ Money left after second deduction = 90% of $\frac{4x}{5}$ = $\frac{36x}{50}$ According to the question, $\frac{36x}{50}=7200$ $\therefore x=\frac{7200×50}{36}=10000$ Hence, the correct answer is INR 10,000.
Result | Eligibility | Application | Selection Process | Cutoff | Admit Card | Preparation Tips
Question : The compound interest on a certain sum invested for 2 years at 10% per annum is INR 1,522.50, the interest being compounded yearly. The sum is:
Question : Christy donated 10% of his income to an orphanage and deposited 20% of the remainder in his bank. If he now has Rs. 7,200 left, what is his income?
Question : A sum (in INR) is distributed between A, B, and C in the ratio 9 : 6 : 11. If A gives INR 500 from his share to C, the ratio of shares of A, B, and C becomes 4 : 3 : 6. What is the sum of shares (in INR) of B and C, in the beginning?
Question : Sudeep invested $\frac{1}{8}$th of a certain sum at 5% p.a. for two years and $\frac{3}{5}$th of the sum at 6% p.a. for two years and the remaining at 10% p.a. for two years. If the total interest received is INR 1,674, then the total sum invested is:
Question : A and B started a business investing amounts of INR 92,500 and INR 1,12,500, respectively. If B's share in the profit earned by them is INR 9,000, what is the profit (in INR) earned by A?
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile