Cases are normally sold full. There were three partially full cases that could be combined to make full cases. The cases were 11/16, 5/16 and 7/16 full.

Respuesta :

11/16 + 5/16 + 7/16 = 23/16

23/16 = 1 7/16

There is enough for one full case and 7/16 case leftover.