Question

Find the selling price of 6 kg of a mixture of maize flour and millet flour if 4 kg of maize flour costing sh. 60 per kg is mixed with 6 kg of millet flour costing sh. 45 per kg and a profit of 20% is realized.

Answer 1

BP per kg = ^{(4 x 60) + (6 x 45)}/_{4 + 6} = Sh. 51 
BP of 6kg = 51 x 6 = Sh. 306
SP per kg = ¹²⁰/₁₀₀ x 306
= Sh. 367.20