A Times Square food cart vendor was stabbed in the chest, and a co-worker beaten, during an argument with a trio of customers over the price of a hot dog, police said Tuesday. The 32-year-old stabbing victim was rushed by medics to Bellevue Hospital and is expected to survive. His co-worker, a 37-year-old man, was punched and kicked but did not need medical treatment. Their attackers took issue with the price of a hot dog, sparking an argument that grew heated at W. 43rd St. and Seventh Ave. 2:30 a.m. Monday, police said. Customer Malik Butler allegedly pulled a weapon and stabbed the younger vendor in the chest. Butler, 23, and his accused accomplices, Kymani Santiago and Jeremiah Dilworth, both 19, then roughed up both vendors and stole a scooter from them, police said. When cops arrived they grabbed Santiago and Dilworth. Butler ran from the scene and into the subway station at W. 42nd St. and Eighth Ave., where police caught up to him. He was jolted with a police Taser then arrested, police said. All three suspects are charged with assault and robbery, cops said. Butler has nine prior arrests, including for assault and robbery, police said. Records show he was paroled in August after serving more than three years in state prison for a Queens robbery conviction. His alleged accomplices each have one prior subway arrest, Santiago for fare evasion, Dilworth for attempt to commit fraud.