Vedanta Group is willing to spend $12 billion to acquire India’s state-owned refiner Bharat Petroleum Corp., an asset sale that’s among the nation’s biggest and which has faced delays in completion. “We’re not going to bid aggressively, but we will put the right price,” billionaire chairman Anil Agarwal said in an interview in Riyadh on Wednesday. “The market cap of the company is about $11 billion to $12 billion, so this is the amount of investment we’re looking at.”