word problem help

Question

Nicole bought 20 pieces of fabric of different lengths. The average length of 12 pieces is 3 feet. The total length of the other 8 pieces is 44 feet. Find the average length of the 20 pieces of fabric.

Answer 1

Since the average length of the first 12 pieces is 3 feet, then the total number of feet for those 12 pieces is 36 ft.

 

The 8 other pieces total 44 feet, so all 20 pieces total 80 ft.

 

Divide the total by 20 and you have your average length