Hungary's government slashes growth forecast IMF to update its World Economic Outlook MSCI EM FX, stocks indexes off 0.3% each By Purvi Agarwal and Ankita Yadav July 29 - Most emerging market currencies fell against a stronger dollar on Tuesday while stocks were mixed as investors awaited a slate of upcoming economic data, while the U.S. tariff deadline drew closer. MSCI's gauge tracking emerging market currencies fell 0.3% to its lowest level since late June, in a third session of declines. The dollar index rose 0.2%, hovering near its five-week...