A seller combines 26 kg of rice priced at ₹20 per kg with 30 kg of rice priced at ₹36 per kg and sells the mixture for ₹30 per kg. What is the percentage of profit he makes?

5

According to the question,

Cost price of 26 kg of rice = 26 × 20  = Rs. 520

Cost price of 30 kg of rice = 30 × 36 = Rs. 1080

Total cost price of 56 kg of rice = 520 + 1080 = Rs. 1600

Selling price of 56 kg of rice = 56 × 30 = Rs.1680

Profit % = {[(SP - CP)/CP] × 100}

= {[(1680 - 1600)/1600] × 100}

= (80/1600) × 100 = 5%