Indian Institute of Foreign Trade 2015 Solved Paper

As a strategy towards retention of customers, the service centre of a split AC machine manufacturer offers discount as per the following rule; for the second service in a year. the customer can avail of a 10% discount; for the third and fourth servicing within a year, the customer can avail of 11% and 12% discounts respectively of the previous amount paid. Finally, ifs customer gets more than four services within a year, he has to pay just 55% of the original servicing charges, if Rohan has availed 5 services from the same service centre in a given year, the total percentage discount availed by him is approximately: