Mysty Offered to Sell Her Car to Tim for $15

Mysty offered to sell her car to Tim for $15 000.Tim faxed a letter to her that said,"Consider it sold.I'll bring the money to you next Monday when I pick up the vehicle.Of course,for that price,I'll want you to install a new stereo in it." Tim did not hear anything more from Mysty,but he arrived at her door the following Monday with $15 000 in cash.He was delighted to find that a new stereo had been installed in the car,but disappointed when Mysty refused to accept his money or hand over the vehicle.Mysty is required to do so because there was a valid offer and acceptance.