Contracts

A 17-year-old boy signed a contract to buy a moped from a moped dealer for 500 dollars down and 50 dollars per month for 36 months. The boy used the moped to get to school. The boy made monthly payments until his 19th birthday when the boy's uncle gave him an old car to drive because "it was way too cold to be riding a moped to school." The boy then called the dealer and said that he would return the moped and stop making payments. When the dealer protested, the boy correctly pointed out that the age of majority in the state was 18. The dealer sued the boy for the remaining payments owed on the contract.

Is the dealer entitled to the remaining payments owed on the contract?