The correct answer is He should complete the repairs and sell the boat for $900
Deshawn has spent $600 purchasing and repairing an old fishing boat, which he expects to sell for $900 once the repairs are complete. Deshawn discovers that, in addition to the $600 he has already spent, he needs to make an additional repair, which will cost another $400, in order to make the boat worth $900 to potential buyers. He should complete the repairs and sell the boat for $900.