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Old 01-09-2009, 05:51 PM
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martindwilson martindwilson is offline
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size in a1 cost per m2 in b1

Code:
=if(and(a1>0,a1<=0.42),0.42*b1,if(and(a1>0.42,a1<=3.2),a1*b1,if(and(a1<=4.2,a1>3.2),(a1*b1)+(a1*b1)*35%,if(a1>4.2,(a1*b1)+(a1*b1)*45%,""))))
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