I need to count how many students have a 70% and over of a value in a cell
that

A B C D
Example: 1 Lisa
70 55 50
A B C D 2
Mike 44 40 70
9 Value 80 60 75 3 Rose
57 30 53
10 70% 56 43 53 (=b9*0.7) ok
11Amount Stu =count(b1:b3) give 3 that's OK
12 Amount with =countif (b1:b3, "=56) give 2 thats OK but instead of 56 i
need
and over 70% to look in a cell (b10)
WHEN I DID IT GIVE 0. =coutif
(b1:b3,"=b10")
Help me!!