L and Scarlet were making a quilt and completed 33/100 of the quilt and Scarlet completed 4/10 of the quilt. How much of the quilt have they completed together?

37/100
73/100
37/10
73/10

To find out how much of the quilt L and Scarlet have completed together, we need to add up the portions of the quilt each of them completed individually.

L completed 33/100 of the quilt
Scarlet completed 4/10 of the quilt

To add these fractions, we need to have a common denominator, which in this case is 100.

33/100 + 4/10 = 33/100 + 40/100 = 73/100

Therefore, L and Scarlet have completed 73/100 of the quilt together.

The answer is 73/100.