After graduating from Babson College in 1963, Blank was hired by Arthur Young and Company, where he was a senior accountant. He later joined the Daylin corporation, where he rose to become president of Elliott's Drug Stores/Stripe Discount Stores, a division of Daylin. When Daylin decided to sell off that division, Blank moved to another division, Handy Dan Home Improvement Centers. Bernard Marcus was CEO of Handy Dan and Blank was vice president of finance when both were fired in 1978 as part of an internal power struggle.