Respuesta :

Answer:

Sum is 15 gal 2 qts

Step-by-step explanation:

Add:  9 gal 1 qt to 6 gal 1 qt, remembering that 4 qt = 1 gal.

9 gal + 6 gal = 15 gal, an 1 qt + 1 qt = 2 qts.

Sum is 15 gal 2 qts