A clock seller sold a clock by purchasing it at Rs 336. The amount of his profit percenty is as much as the amount with which he bought the clock. Find the cost price of the clock.

A clock-seller sold a clock by purchasing it at RS 336. The amount of his profit percentage is as much as the amount with which he bought the clock.Hence find the required quadratic equation.

A clock-seller sold a clock in RS (alpha+beta) by purchasing it. Then his percentage of less was the same as the amount by which he had bought the clock.

Three friends, investing Rs. 120000, Rs. 150000 and Rs. 110000, bought a bus. One friend is a driver and the rest two friends are conductors. They decied that 2/5 th of the gain will be distributed amongst themselves at the ratio 3:2:2 due to their corresponding works and the rest at the ratio of their respective capitals. If the profit of a month be Rs. 29260, then find the amount of profit of each of them.

A person writes a letter to four of his friends. He asks each one of them to copy the letter and mail to four different persons with instruction that they move the chain similarly. Assuming that the chain is not broken and that it costs 50 paise to mail one letter. Find the amount spent on the postage when 8th set of letter is mailed.

A man has an antique pendulum clock of 1832 which bears the signature of the purchaser. He does not want to replace it in the fond memory of his great-grandparents. It ticks off one second in each side to side swing. It keeps correct time at 20^(@)C . The pendulum shaft is made of steel and its mass can be ignored as compared to the mass of the bob. Linear expansion coefficient of steel is 1.2xx10^(-5@)C^(-1) How many seconds will the clock gain or lose in a day at 10^(@)C ?

A man has an antique pendulum clock of 1832 which bears the signature of the purchaser. He does not want to replace it in the fond memory of his great-grandparents. It ticks off one second in each side to side swing. It keeps correct time at 20^(@)C . The pendulum shaft is made of steel and its mass can be ignored as compared to the mass of the bob. Linear expansion coefficient of steel is 1.2xx10^(-5@)C^(-1) What is the fractional change in length if the shaft is cooled to 10^(@)C ?

A merchant plans to sell two types of personal computers- a desktop model and a prtable model that will cost Rs. 25000 and Rs. 40000 respectively. He estimates that the total monthly demand of computers will not exceed 250 units. Determine the number of units of each type of computers which the merchant should stock to get maximum profit if he does not want to invest more than Rs. 70 lakhs and if his profit on the desktop model is Rs. 4500 and on portable model is Rs. 5000.

Bimanbabu for the higher education of his son and daughter, deposited some money in a bank at a rate of 12% simple interest per annum. After 20 years, the total amount that Bimanbabu got from the bank, distributed the money among his son and daughter in the ratio 5 : 3 and then bought two govt. debenture. If the value of the deventure of son be Rs25500 , then find the amount of money which Bimanbabu invested in the bank at first.