Plaintiff sold and delivered to defendant a boat for a contract price of $1200, to be paid in monthly installments of $100.00. at the time of the sale, defendant represented that she was twenty years

Plaintiff sold and delivered to defendant a boat for a contract price of $1200, to be paid in monthly installments of $100.00. at the time of the sale, defendant represented that she was twenty years of age, although, as a matter of fact, she was seventeen years and ten months old. defendant, after paying $400 on account in four equal monthly installments, refuses to pay further installments. in that time the boat has depreciated $500 through use. what rights if any, does the plaintiff have against the defendant?