Assume that the bowlers average is going to be entered
into A1 and assume that you want to display their
handicap in B1 you would enter =(210-A1)*.9 in B1.

Enter their average in A1 and their handicap will display
in B1.

Hope this helps.

-----Original Message-----
What is the formula to enter in an excel worksheet to
compute bowler handicap
at 90%of 210?
.