What is the reciprocal of three one over five?

Answer 1

Do you mean three and one fifth (3 1/5)?

If so, convert the mixed number to an improper fraction and then turn it upside down:

3 1/5 = 16/5

=> reciprocal of 3 1/5 = 5/16.

If you mean thirty one fifths (31/5), just turn it upside down => 5/31.