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#1
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How do I enter a ratio as a constraint in Solver? My ratio is 4:1, do I
simpy put 4:1? |
#2
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A constraint apples to the value in a cell.
If you need item-a/item-b to be in the ration 4:1 The in some cell (say D4) enter =x2/x3 where these cell ref to the items Now make the constraint D4 = 4 Any help? -- Bernard V Liengme www.stfx.ca/people/bliengme remove caps from email "Shann0n" wrote in message ... How do I enter a ratio as a constraint in Solver? My ratio is 4:1, do I simpy put 4:1? |
#3
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Thanks so much! I had the "B27<=" part, I just wasn't sure how to finish it.
It seems that the answer was just too simple and I wanted to confuse myself and make it harder than it was! "Bernard Liengme" wrote: A constraint apples to the value in a cell. If you need item-a/item-b to be in the ration 4:1 The in some cell (say D4) enter =x2/x3 where these cell ref to the items Now make the constraint D4 = 4 Any help? -- Bernard V Liengme www.stfx.ca/people/bliengme remove caps from email "Shann0n" wrote in message ... How do I enter a ratio as a constraint in Solver? My ratio is 4:1, do I simpy put 4:1? |
#4
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Hi. Just some thoughts. In some models, there is also the following
option. Suppose you have [D4] = "=x2 / x3", with a constraint that D4 = 4. (x2 & x3 adjustable cells) What you have is x2/x3 = 4. What one should try to do is make the equation look more linear. x2=4*x3. But we don't want the variable on the Right side, so in D4 we write: =x2-4*x3 and make the constraint =0. The added benefit is that if Solver picks 0 for x3 to help determine its next move, you won't get a Divide by 0 error in D4,and quickly stopping Solver. Again, just an idea. :) -- Dana DeLouis Win XP & Office 2003 "Shann0n" wrote in message ... Thanks so much! I had the "B27<=" part, I just wasn't sure how to finish it. It seems that the answer was just too simple and I wanted to confuse myself and make it harder than it was! "Bernard Liengme" wrote: A constraint apples to the value in a cell. If you need item-a/item-b to be in the ration 4:1 The in some cell (say D4) enter =x2/x3 where these cell ref to the items Now make the constraint D4 = 4 Any help? -- Bernard V Liengme www.stfx.ca/people/bliengme remove caps from email "Shann0n" wrote in message ... How do I enter a ratio as a constraint in Solver? My ratio is 4:1, do I simpy put 4:1? |
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