Two successive price decreases of 20% and 30% of an article are equivalent to a single price decrease of:

50% 44% 25% 40%

44%

Two successive price decrease of x%, y% = x + y - xy/100 Two successive price decrease of 20%, 30% = 20 + 30 - 20x30/100                                                                 = 50 - 6 = 44%