Answer:
3/20, 1/5, 1/4, 1/2
Explanation:
Well, first make all the denominators the same. The highest is 20, so let's go with that. So making all of the fractions have the same denominator, you have
3/20, 4/20 (1/5), 10/20 (1/2), and 5/20 (1/4).
Order them...
3/20, 4/20, 5/20, and 10/20.
Therefore, your answer is:
3/20, 1/5, 1/4, 1/2.