Respuesta :
					                   Petri dish A has 1080000000000000
Petri dish B has 270000000000
Petri dish a is greater by 1.07973E15
Hope that helped :)
					                
					                
					             Petri dish B has 270000000000
Petri dish a is greater by 1.07973E15
Hope that helped :)
 
			                  