Twenty Dollars a Week (1924)

Millionaire John Reeves makes a bargain with his son, Chester, that they can both support themselves on $20 per week. John takes a bookkeeping job at a steel plant owned by William Hart, a lazy young man who inherited the company. His sister, Muriel, adopts a small boy, prompting William to adopt John as his father. John discovers a conspiracy to undermine the company and becomes a partner after saving it from financial ruin. Chester falls in love with Muriel, and they plan to marry.