Business Law 13th Edition by Frank Cross, Kenneth Clarkson, Roger LeRoy Miller

Exercise 14

Illusory Promises Costello hired Sagan to drive his racing car in a race. Sagan's friend Gideon promised to pay Sagan $3,000 if she won the race. Sagan won the race, but Gideon refused to pay the $3,000. Gideon contended that no legally binding contract had been formed because he had received no consideration from Sagan in exchange for his promise to pay. Sagan sued Gideon for breach of contract, arguing that winning the race was the consideration given in exchange for Gideon's promise to pay. What rule of law discussed in this chapter supports Gideon's claim?