In order to accurately compare these values, you need to change them into fractions with the same denominators (the number on the bottom of the fraction) by finding the LCM (least common multiple). The denominators, 8 and 20, both have a multiple of 40.
So, first with 1/8 you multiply the top and bottom by 5 and get 5/40.
Secondly, with 3/20, you multiply the top and bottom by 2 and get 6/40.
6/40 is greater than 5/40, so for the answer you would put the "less than" symbol.
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