Question
A 250 litres mixture contains milk and water in the
ratio 4:1 respectively. If 40% of the mixture is replaced with the same quantity of water, then find the quantity of water in the new mixture.Solution
Quantity of water in the mixture initially = 250 × (1/5) = 50 litres Quantity of water removed = 50 × 0.4 = 20 litres Quantity of water added = 250 × 0.4 = 100 litres Quantity of water in the new mixture = 50 – 20 + 100 = 130 litres
Rs. 8500 is invested in scheme ‘A’ for 2 years and Rs. 6500 is invested in scheme ‘B’ for 2 years. Scheme ‘A’ offers simple interest of 13% ...
A man borrowed Rs 300 and promised to pay back in 11 equal instalments of Rs 30 each. Find the rate of simple interest per annum?
A certain sum when invested for 3 years in a scheme offering simple interest of 10% p.a. gives an interest of Rs. 765. What is 110% of the sum invested?
A man deposited Rs. ‘x + 850’ at 12% per annum simple interest and earned Rs. 552 as interest after 2 years. Find the interest earned by him if he d...
At what % of simple interest per annum will Rs. 500 amount to Rs. 610 in five years?
Shivam invested 24000 at 12% p.a. simple interest for ‘x’ months. If at the end of ‘x’ months, he received a total amount of Rs.26400. What is t...
A person invests ₹40,000 at a simple interest rate of 5% per annum for 2 years and reinvests the total amount, including interest, in a scheme offerin...
A sum doubles in 20 years at simple interest. What is the rate of interest?
Simple interest and compound interest (compounded annually) earned on a sum at the end of 2 years at a certain rate of interest p.a. are Rs. 2500 and Rs...
- The total amount received on a certain sum of money at the rate of interest of 15% per annum compound interest after 3 years is Rs. 36501. What was the pri...
