Hi, I need help to setup the VLOOKUP function for an assignment. Everytime I
try to do it, it says, #NA.

I need to use VLOOKUP to put in the letter grade for a list of students's
grades in % on their midterms.

The average % is in cells D8:D18.

The lookup table I made (in cells I9:J13) is as followed:

85% and above A
70% and above B
65% and above C
50% and above D
Below 50% F

This is what I tried for VLOOKUP but got #N/A:

lookup value: D8
table array: I9;J13
col_index_num: 2

so the final formula looks like this: =VLOOKUP(D8,I9:J13,2)
and that gave me #N/A.

Can anybody help please???