Concept:In column addition, carry-over from the units place affects the tens place. We find the missing digits P and K using the sums and carries shown.Explanation:Look at the units column: 1 + P gives a unit digit 0. So P must be 9 (since 1+9=10, carry 1). The tens column adds 7 + 3 + carry 1 = 11, giving unit digit 1 and a carry of 1 to the hundreds column. In the hundreds column: 4 + K + carry 1 gives a unit digit 2. So 4 + K + 1 = 12. Therefore, 5 + K = 12, so K = 7. Thus, P = 9 and K = 7. Their sum is 9 + 7 = 16.Answer:16 (Option C)
