Question 312904
brazil coffee $12 
let quantity to be mixed be x kgs
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Venezuela coffee $16 quantity will be 384-x. ( the balance )
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The mixture is $13 quantity 384 kg.
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Cost of brazil coffee + cost of Venezuela coffee = cost of mixture
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12x +16(384-x)=384*13
12x +6144 -16x =4992
-4x=4992-6144
-4x=-1152
x=-1152/=4
=288 kgs brazil coffee
Balance will be venezuela coffee 96 kgs
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