272 people attend a School brass band competition. There are 223 children and 16 teachers, the rest are parents. Haw Manu parents are there?

There are 33 parents attend the school brass band competition

Step-by-step explanation:

The attend = Children + Teachers + Parents

The number of attend = 272

The number of children who attend = 223

The number of teachers who attend = 16

The number of parents who attend = x

Substitute the numbers in the equation above

272 = 223 + 16 + x

223 + 16 = 239

272 = 239 + x

Subtract 239 from both sides

33 = x

x represents the number of the parents who attend

There are 33 parents attend the school brass band competition