Chinese economy concerns wipe $40bn off value of Apple

Fall in share price of world’s biggest company mirrored by slide in stocks in mining and commodity firms to their lowest level since market crash of 2008Growing concerns about the health of the Chinese economy helped wipe $40bn off the value of Apple on Wednesday despite the company reporting a sharp increase in global sales and profits.The 5% fall in share price in the world’s biggest company was mirrored by a slide in shares in mining and commodity firms to their lowest levels since the st