Blackstone on Monday said it has inked a pact to acquire a majority stake in Hyderabad-based CARE Hospitals from Evercare, a platform of TPG RISE funds, for USD 700 million (around Rs 5,827 crore), thus foraying into country's healthcare services sector. Private equity funds managed by Blackstone have acquired 72.5 per cent in Care Hospitals at an enterprise value of Rs 6,600 crore.