Question
Find the cost price of the digital watch for the
shopkeeper if he initially marked it at 80% above the cost price and later offered two successive discounts of 15% and 20%. After these discounts, 'X' spent Rs. 164 on repairing the digital watch and then sold it to 'Y' for Rs. 2400, resulting in a 20% profit for X. Determine the original cost price of the digital watch for the shopkeeper.Solution
We can say that cost price of the digital watch for shopkeeper be Rs.'100a' So, (1.8 × 0.85 × 0.80 × 100a) = (2400/1.2) – 164 = 1836 122.4a = 1836 a = 15 So, cost price of the digital watch for shopkeeper = Rs.1500
- Anil borrowed Rs. 7,200 at simple interest of 15% p.a. and Rs. 8,400 at simple interest of 12% p.a. The total interest he paid after ‘y’ years is Rs. 8...
A man invested Rs. 7,000 at simple interest of 'x%' p.a. and received Rs. 14,000 after 2 years. If he had invested Rs. 80,000 at simple interest of 'x%'...
A man invested certain sum at simple interest of r% p.a. such that it amounts to 160% of itself in 6 years. Find the interest earned when Rs. 2400 is in...
- Anita invests Rs. 9,200 at 7% simple interest per annum for 3 years. If the total amount becomes Rs. '2k', then calculate the product of digits of 'k'.
Find the total amount received on investing Rs. 12,000 for 2 years at compound interest of 10% p.a., compounded annually.
- Priya deposited Rs. ‘x’ at 14% p.a. simple interest, and Neha deposited Rs. (x + 600) at 11% p.a. simple interest. If after 2 years, the total interest...
Anita invested Rs. 5400 in scheme 'P,' which offers a 15% per annum simple interest rate, and she invested Rs. 3800 in scheme 'Q,' offering a 25% per an...
R' invested an amount of Rs. 'r' for a duration of 4 years, while 'S' invested Rs. 6000 for 18 months. The ratio of their respective profits is 16:9. De...
- Rs. 15,000 becomes Rs. 21,900 after 6 years on simple interest. What is the rate of interest per annum?
If the difference between the simple interest and compound interest, compounded annually, on Rs. 40,000 at (r + 4)% rate of interest for 2 years is Rs. ...