A trader mixes 2 kg of butter which costs $8 per kg with 3 kg of butter which costs $6 per kg. He sells the mixture at $2.55 per 250g. Express his profit as a percentage of his selling price.
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Cp = (2*8) + (3*6) = $ 34 / 5 kg
Sp = $ 2.55/250g = 2.55 * 4 = $ 10.2/kg.
for 5 kg = 10.2 *5 = $ 51
profit = 51-34 => 17
% = 17/34*100 => 50%
Sp = $ 2.55/250g = 2.55 * 4 = $ 10.2/kg.
for 5 kg = 10.2 *5 = $ 51
profit = 51-34 => 17
% = 17/34*100 => 50%
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