N family have 2 boys and 1 girl each, M family have 1 boy and 2 girls each. In total, there are 11 boys and 10 girls among these M+N family. What is the sum of N+M?
N family have 2 boys and 1 girl each, M family have 1 boy and 2 girls each. In total, there are 11 boys and 10 girls among these M+N family. What is the sum of N+M?