Defence Academy Coimbatore A leading coaching academy for Sainik, Military and RIMC Schools, NDA, IMA, AFCAT SSB, FSB Interview http://www.ssbcoaching.com call 094437 20076 Revision – 19 May 2017- Military School Average 1. (a) How to find the average when total of 7 quantities are given? (b) The average age of 50 students and a teacher is 25 years. When the teacher’s age is excluded, the average age decreases by 1 year. What is the age of the teacher? c) Average of the runs made by Raju, Shyam and Hari is 7 less than that made by Shyam, Hari and Kishore. If Kishore’s score is 35, what is Raju’s score? Simple Interest 2.(a) What is the formula to find the Rate of Interest , if SI, P and Time is given? (b) At time will a Simple interest double itself at the rate of 10% SI per annum? Let P be Rs.1000? c) A sum of money becomes 3 times in 5 years. In how many years will...