Question

A sum was put at 10%simple rate of interest for 3 year.had it been put at 12% simple rate of interest per annum,it has fetched 12 more. What is the sum ? please solve​

Answer 1

A clock is a device used to measure, keep, and indicate time. The clock is one of the oldest human inventions, meeting the need to measure intervals of time shorter than the natural units: the day, the lunar month, and the year. ... Water clocks, along with the sundials, are possibly the oldest time-measuring instruments.