Question 220752
Let  m =  amt  milk,,,,and  c =  amt  of  cream,,,,both  in  gallons
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.02m   +.09c = .04 (35)
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 but  m+c =35,,,,,or  m=35-c,,,,subst
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.02(35-c) + .09 c = .04(35)
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.7 -.02c + .09c = 1.4
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.07c = .7
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c= 10   gal,,,,,,,,,m=35-10=25 gal
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checking,,,,,.02(25) + .09(10) = .04(35)
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.5 + .9 = 1.4,,,,,ok
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