P can do a piece of work in 200 days. Q and R can do the same work in 100 days. P, Q and R started the work together and they worked together for 40 days and then Q left the work and P and R together finished the remaining work in 40 days. Find the number of days in which Q alone can do the total work.
Sohan borrowed money at the rate of 20% per annum on compound interest, interest was compounding annually and he paid it in three equal instalments, each instalment was to be paid at the end of every year. If each instalment was for ₹1,250, then the money borrowed by Sohan was (nearest integral value):