Aug 21 (Reuters) - Westpac Banking Corp WBC.AX :
* Westpac's common equity tier 1 (CET1) capital ratio was 10% at 30 June 2017.
* Total risk weighted assets (RWA) increased $2.2 billion or 0.5% this quarter
* Over quarter, exposure at default (EAD) increased $20.0 billion