1.  The cost of servicing of a Maruti car at Maruti care Pvt. Ltd. is ₹ 400. Manager of service centre told me that for the second service within a year a customer can avail a 10% discount and further for third and forth servicing he can avail 10% discount of the previous amount paid, within a year Further if a customer gets more than 4 services within a year he has to pay just 60% of the servicing charges on these services. A customer availed 5 services from the same servicing station, What is the total percentage discount fetched by the customer?
A. 19.42%
B. 18.5%
C. 17.6%
D. 26%

Answer: Option A

Explanation:

Amount paid in 1st service = 100 (suppose)

Amount paid in 2nd service = 90

Amount paid in 3rd service = 81

Amount paid in 4th service = 72.9

Amount paid in 5th service = 60

 Total amount paid = 403.9

Discount = 500 - 403.9 = 96.1

 Discount % = 96.1 / 500 X 100 = 19.42%