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OpenStudy (anonymous):
pn
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OpenStudy (anonymous):
\[ 0.8a+0.9b=0.825(a+b) \\ \]With the second constraint being that a/b are natural numbers.
OpenStudy (anonymous):
So set \(a=12\) (a nice number because of its factors) and solve for \(b\) then reduce the ratio.
OpenStudy (anonymous):
only final anwer countz
sam (.sam.):
(E) 3 : 1
OpenStudy (anonymous):
no
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geerky42 (geerky42):
(A) 1 : 3
OpenStudy (anonymous):
to be fair, only say if right or wrong with included reasoning. wio was on the right track
geerky42 (geerky42):
@.Sam. answered correctly, I believe. And you said "only final anwer countz."
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