The pressure on Yahoo boss Marissa Mayer eased on Tuesday evening, as the struggling Internet company returned to growth. Sales rose 1pc in the third quarter to $1.09bn, ahead of the firm's own forecasts, reversing a 4pc decline the previous quarter. The growth marked only the second time Yahoo has increased sales in the last six quarters. Last month, activist investor Starboard Value accused Mayer of allowing the company's core business to stagnate, and called for the firm to merge with its rival, AOL.