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Indian Institute of Foreign Trade 2015 Solved Paper

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Question : 7 of 124

Marks: +1, -0

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:

16.52
20.88
22.33
24.08

Solution:

(b) Let original service Charges be ₹ 100

Second Service Cost = .9 × 100 = ₹ 90

Third Service Cost = .89 × 90 = ₹ 80.1

Fourth Service Cost = .88 × 80.1 = ₹ 70.5

Fifth Service Cost = ₹ 55

Total payment done by Rohan = 395.6 approx.

Discount availed by Rohan = ₹ 104.4

% age discount offered =

\frac{104.4}{500} \times 100 = 20.88\%

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