A grocer purchased 20kg of rice at the rate of Rs. 15 per kg and 30 kg

1.	A grocer purchased 20kg of rice at the rate of Rs. 15 per kg and 30 kg of rice at the rate of Rs. 13 per kg. At what price per kg should be sell the mixture to earn 33 1/3 % profit on cost price?
Answer» Mixture = 2 kg of rice at Rs.15/kg + 3 kg. of rice at Rs.13/kg Total weight = 2 + 3 = 5 kg Total cost price =(2×15)+(3×13) = 30 + 39 = Rs.69 Cost price per kg of the mixture =69/5= Rs.13.80 Selling price to get33(1/3)% profit =100+33(1/3)/100= Rs.13.80 400/3×100= Rs.13.80 =4/3= Rs.13.80 = Rs.18.40

A grocer purchased 20kg of rice at the rate of Rs. 15 per kg and 30 kg of rice at the rate of Rs. 13 per kg. At what price per kg should be sell the mixture to earn 33 1/3 % profit on cost price?

Answer»

Mixture = 2 kg of rice at Rs.15/kg + 3 kg. of rice at Rs.13/kg

Total weight = 2 + 3 = 5 kg

Total cost price =(2×15)+(3×13)

= 30 + 39 = Rs.69

Cost price per kg of the mixture =69/5= Rs.13.80

Selling price to get33(1/3)% profit

=100+33(1/3)/100= Rs.13.80

400/3×100= Rs.13.80

=4/3= Rs.13.80

= Rs.18.40