A retailer offers the following discount schemes for an article to his customers.
A. Two equal successive discounts of 15% .
B. Two successive discounts of 12% and 18%.
C. Buy 7 articles and get 3 free.
Which scheme is favorable to a customer? (assuming buys articles in a multiple of 10)
1
Only A
2
Only C
3
Both A and C are the same
4
Only B