5 kg of superior quality rice is mixed with 25 kg of inferior quality rice. The price of superior quality and inferior quality rice is Rs.18/kg and Rs. 12/kg respectively. The average price in Rs. per kg of the mixture is:

13

Total price of superior quality sugar =5×18=Rs90

Total price of inferior quality sugar =25×12=Rs300

Total price of mix =90+300=390

Total mix quantity=5+25=30kg

Average price = \(\frac{390}{30}\) = 13