Thanks to all, I have managed to solve the problem using the formula
posted by duane. Thanks duane. The only problem is I don't fully
understand the formula, especially the number 4 in it, what does that
do?!
=IF(A1<96,0,IF(A1136,*_4_*+(A1-136)*22/100,(A1-96)*10/100))
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mbys14932
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