Question
A shopkeeper mixes 30 kg of rice which he purchased at
₹30/kg and 40 kg of rice which he purchased at ₹28/kg and he sells the entire mixture at ₹28/kg. What is the profit or loss percentage (approximated to the nearest integer)?Solution
The total cost price of two different rice = (30 × 30) + (40 × 28) =900+1120= Rs. 2020 Total selling price of the total rice = 28 × (30 + 40) = Rs. 1960 
=5% loss.
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