Yahoo's quarterly revenue drops 4 percent

(Reuters) - Yahoo Inc's first-quarter revenue fell 4 percent as the internet company struggles to rev up its core online advertising business.

Net income attributable to Yahoo fell to $21.2 million, or 2 cents per share, for the quarter ended March 31, from $311.6 million, or 29 cents per share, a year earlier.

Revenue, excluding fees paid to partner websites, fell to $1.04 billion from $1.087 billion.

(Reporting by Bill Rigby and Lehar Maan; Editing by Saumyadeb Chakrabarty)