In a kilometre race, A beats B by 30 seconds and B beats C by 15 seconds. If A beats C by 180 metres, the time taken by A to run 1 kilometre is

12 persons can do a piece of work in 4 days. How many persons are required to complete 8 times the work in half the time?

10 men working 6 hours a day can complete a work in 18 days. How many hours a day must 15 men work to complete the same work in 12 days?

A person invests money in three different schemes 6 years, 10 years and 12 years at 10%, 12% and 15% simple interest respectively. At the completion of each scheme, he gets the same interest. The ratio of his investment is

If the simple interest for 6 years be equal to 30% of the principal, it will be equal to the principal after 

The effective annual rate of interest corresponding to a nominal rate of 6% per annum payable half yearly is: 

Three partner A, B and C started a business by investing Rs. 48000 each. after 6 months, A left the business after 10 months B left the business and after 12 months C left the business. If total earned profit is Rs. 5250, then find the share of A, B and C?

A starts a business with ₹45,000. After 6 months Benters in his business with ₹80,000. After one year Cinvests ₹1,20,000. In what ratio the profit will be divided among A, B and C after two years?