Bhanu takes a total of 6 hrs 50 min in walking a distance and running back to same place where she started. She could walk both ways in 8 hrs 30 min. The time taken by her to run both ways is :
Mr. Murthy invested Rs. 16,000 in a scheme. How much will he get on matuirity, if he invested it at 20% per annum C.I. for 9 months, compounded quarterly?