Respuesta :
					                   12 groups in a 1:1 ratio of boys:girls. there are only 12 girls so one in each group + 1 boy per group gives you 12 groups. with a remainder of 6 boys
					                
					                
					             Answer:
Add 12+18= 30
Well the largest group could be in 6's.
They all can be split up to 6 groups, so each group will have 5 kids in it.
 
			                   
					                  