Aug 17 (Reuters) - Viva Energy Group Ltd VEA.AX :
* HY UNDERLYING PROFIT AFTER TAX ATTRIBUTABLE ON REPLACEMENT COST BASIS $34.3 MILLION VERSUS $50.9 MILLION
* HY REVENUE $ 6,667.1 MILLION VERSUS $7,902.7 MILLION
* DECLARES INTERIM DIVIDEND OF 0.8 CENTS PER SHARE