Answer:
Step-by-step explanation:
average weight can be find as;
average=sum of quantity/no. of quantity
or sum=avg*no. of quantity.
now,
first shipment has total 7.4*10= 74 pound
second shipment has total 12*8.2=98.4
third shipment has total 6*8.7=52.2
now calculating the average of all three we get.
avg=(74+98.2+52.2)/3=74.7