Australia’s Wesfarmers has reported a 14 per cent increase in interim profit, with its Kmart arm sales up by 114 per cent. However, the company says its retail business will soon face headwinds due to ongoing inflation and interest rate hikes. The retail business of Wesfarmers comprises Bunnings, Officeworks, and the Kmart Group – which includes Kmart, Target and Catch. For the six months to December 31, overall sales climbed 27 per cent to A$22.56 billion while tax-paid profit reached…