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ktg1006 Group TitleBest ResponseYou've already chosen the best response.1
First this you need to do is solve for r ar+br=35 r(a+b)=35 r=35/(a+b)
 2 years ago

ktg1006 Group TitleBest ResponseYou've already chosen the best response.1
The next thing is use substitution so you only have one variable a+b=140 a=140b
 2 years ago

Grazes Group TitleBest ResponseYou've already chosen the best response.0
I didn't think of turning r into terms of ab. Thanks!
 2 years ago

ktg1006 Group TitleBest ResponseYou've already chosen the best response.1
Then substitute 140b in the equation you solved for r r=35/((140b)+b) r=35/140
 2 years ago
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