A sum of money is divided among P, Q, and R in the ratio 3:5:7. If R receives $1200 more than P, what is the total sum of money?

✓ Correct Answer: Option C

Let the shares be 3x, 5x, and 7x. R receives 7x and P receives 3x. The difference is 7x - 3x = 4x. Since 4x = $1200, x = $300. The total sum is 3x + 5x + 7x = 15x = 15 * $300 = $4500.