Glenn made 16 muffins- 1/4 of 16= 4 muffins with nuts
Catrina made 15 muffins- 1/3 of 15= 5 muffins with nuts
Lisa made 18 muffins- 1/3 of 18= 6 muffins with nuts
Meg made 18 muffins- 1/2 of 18= 9 muffins with nuts
4+5+6+9= 24
Subtract 87-24= 60
Wayne made 60 muffins- 1/4 of 60= 15 muffins with nuts
4+5+6+9+15= 39 muffins with nuts in all