Paul has a wheat business. he purchases wheat from a local wholesaler at a particular cost par pound.The price of the wheat at her local is $30 per kg. His faulty spring balance reads .90 kg for a kg. Also in the festival season he gives 10% discount on the wheat. He found that she made neither a profit nor a loss in the festival season. At what price did Paul purchase the wheat from the wholesaler?

Ans: 11.045 per pound.

[please give me a detail solution. thanks in advance]