SOLUTION: a grocer mixes cookies worth 80 cents a kg with cookies worth 95 cents a kg making a mixture selling at 85 cents a kg. If he mixes 60 kilograms , how many kilograms of each kind d
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Question 138707: a grocer mixes cookies worth 80 cents a kg with cookies worth 95 cents a kg making a mixture selling at 85 cents a kg. If he mixes 60 kilograms , how many kilograms of each kind does he use?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = the kgs of $.80/kg cookies needed
Let = the kgs of $.95/kg cookies needed
In words, the problem is:
(kgs $.80/kg cookies) x ($.80/kg) + (kgs $.95/kg cookies) x ($.95/kg) /
(kgs $.80/kg cookies + kgs $.95/kg cookies) = $.85/kg
or in symbols,
cents/kg
Also given is:
kg
The grocer needs to mix 40 kg of $.80/kg cookies and 20 kg of $.95/kg
cookies
check answer:
OK
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