A second hand furniture store buys sofas with a list price of $9,500. If the wholesaler offers trade discounts of 10/20/30, find the single equivalent discount.

Answer 1

single equivalent discount
= 1 - .9(.8)(.7) = .496 = 49.6%

49.6% off 9500 = 4712
final price = 9500-4712 = 4788

or , the long way
10% of 9500 = 950
after 1st discount: 9500-950 = 8550
20% discount on 8550 = 1710
after 2nd discount:8550-1710 = 6840
30% of 6840 = 2052
after 3rd discount: 6840-2052 = 4788