Polly and her friends want to make matching outfits for twin day at school. They have 51 yards of cloth. If each outfit requires 2 2/5 yards of material, how many outfits can they make?

21

Step-by-step explanation:

Total cloth length = 51 yards

Cloth requirement for each outfit = 2 2/5 = 12/5 yards

Total possible number of outfits can be calculated by dividing to total cloth length by the length of each outfit.

Total outfits = 51 / (12*5)

=> (51*5) / 12

=> 21.25

As the number of suits is always an interger, so the total number of outfits made by 51 yards of clocth are 21