a) 19.42%
b) 18.5%
c) 17.6%
d) 26%
Answer: a
Explanation:
Amount paid in 1st service = 100 (Assume)
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,
= (100 +90 +81 +72.9 +60) = 403.9
Total Discount = 500 – 403.9 = 96.1
% Discount = $$\frac{{96.1 \times 100}}{{500}}$$ = 19.42%
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