<PRE><B>Question 643006</B>
A store mixes Kenyan Coffee worth $10 per Kilogram and Turkish coffee worth $14 per Kilogram. The mixture is to sell for $11 per kilogram. Find out how much of each should be used to make a 528-Kilogram Mixture 
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let x=amt of Kenyan coffee to be used
528-x=amt of Turkish coffee to be used
..
$10*x+$14(528-x)=$11*528
10x+7392-14x=5808
-4x=5808-7392=-1584
x=1584/4=396
528-x=132
amt of Kenyan coffee to be used=396 kg
amt of Turkish coffee to be used=132 kg
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