Arjun purchased 30 kg of wheat at the rate of Tk. 11.50 per kg and 20 kg of wheat at the rate of Tk 14.25 per kg. he mixed the two and sold the mixture. Approximately what price per kg should he sell the mixture to make 30% profit?

Question: Arjun purchased 30 kg of wheat at the rate of Tk. 11.50 per kg and 20 kg of wheat at the rate of Tk 14.25 per kg. he mixed the two and sold the mixture. Approximately what price per kg should he sell the mixture to make 30% profit?

Solution:
Total cost = 30 × 11.5 + 20 × 14.25
= 345 + 285
= 630

Selling price = 630 + 630 × 30%
= 630 + 189
= 819

Then, price per kg = 819/50
= 16.38 taka