What is the value of ? in the following equations ? 72/? = ?/50

• A. 80
• B. 100
• C. 60
• D. 40

Answer: (C)

(?)² = 72 x 50= (6 x 6 x 2) x (5 x 5 x 2)= (6 x 5 x 2)² = (60)²∴ ? = 60