If x + y = 8 and x − y = 2, find xy. A 10 B 15 C 16 D 12 ✓ Correct Answer: Option B x = 5, y = 3 (add equations: 2x = 10, x = 5, y = 3). xy = 15. Practice SAT Exam Prep Quizzes → Browse All Questions Study Flashcards