Average weight = Total weight of all apples ∕ Total number of apples Calculations: Total weight of 40 apples =40×33=1320kg Total weight of 32 apples =32×60=1920kg Total weight of all apples =1320+1920=3240kg Total number of apples =40+32=72 ⇒ Average weight =3240∕72 ⇒ Average weight =45kg