Question
A man invested a certain amount of sum at 15% per annum
simple interest and earned an interest of Rs.2100 after 2 years. If the same amount is invested at 10% per annum compound interest, compounded annually for two years, then find the interest.Solution
Let the certain sum of money be Rs.P. So,  P x 0.15 x 2 = 2100 => P = Rs.7000 Desired interest = [(1.1)2 – 1] x 7000 = Rs.1470
In an election between two contestants 'Rahul' and 'Sohan', 'Rahul' secured 62% of the total votes and defeated 'Sohan' by 7,440 votes. How many votes d...
 In a lock-making factory, 10 percent of the total produced locks were found to be defective, and 80 percent of the non-defective locks were exported. ...
If the price of petrol is increased by 28%, by what percentage should the consumption be decreased by the consumer if the expenditure on petrol remains...
In an exam, Riya scored 40% and fell short of the pass mark by 20 marks, whereas Mehul scored 50% and exceeded the passing mark by 10 marks. What are th...
In a shop, there are a total of 15,000 chip packets. Out of these, 28% are Green Lays packets, and out of the remaining, 75% are Red Lays packets, and t...
- Pooja spent 45% of her earnings on shopping, 55% of the remaining on house expenses, and the rest she saved. If her savings are Rs. 990, determine how much...
A man donated 22%, 11% and 26% of his income to three NGOs ‘A’, ‘B’ and ‘C’, respectively. They spent 75%, 80% and 50% of respective sums re...
Rohan allocates his income in the following manner: he spends 25% on rent, then 20% of the remaining amount on food. From what is left, he deposits 30% ...
The income of Suresh is 30% higher than that of Mukesh. While Mukesh spends 80% of his income, Suresh spends 60% of his income. If Suresh saves Rs. 6,50...
The income of P is 2/5th of the income of Q and income of R is 60% more than the income of Q. Income of Q is Rs.15000 and expenditure of P is...
