It is 8/30.
8/30 = 4/15
30/48 = 5/8
4/15 = 8/30
If you mean ' 8 5/30'. as a mixed number. Then to convert to an improper (top heavy) fraction. {[8 x 30] + 5} / 30 Note the use of brackets { 240 + 5 ] / 30 245/30 Cancel down by '5' 49/6 = 8 5/30 NB 'Improper' is the correct mathematical expression. ' Top heavy' is just a casual term.
30.625 = 30 + 5/8
80/30
5/8
8/60 = 4/30 = 2/15
30/80 is one such.
2 over 15
If you mean 30:48, then it would be 5:8 If it's 30/48, then it would be 5/8
It is:m 8/15 = 16/30