What are two fractions between 1/8 and 2/5

An easy way is to make the bottom numbers the same then make them really big
1/8 and 2/5
8 and 5
common number is 40
1/8 times 5/5=5/40
2/5 times 8/8=16/40
so we have the same question in a differne way
wat is between 5/40 and 16/40
obviously any number between 5 and 16 can go on the top
here are some example fractions
6/40, 7/40, 8/40, 9/40, 10/40, 11/40, 12/40, 13/40, 14/40, 15/40

Two fractions between 1/8 and 2/5

Lets turn these into decimals to make calculations much easier. 

1/8 = 0.125
2/5 = 0.4

0.2 = 1/5

One fraction is 1/5

0.25 = 1/4

Another fraction is 1/4

1/4 and 1/5

(1/x + 1)^2 + 6 (1/x + 1) +5