Answer:
$150 million
Explanation:
there are 10 million shares outstanding and each share cost $30, so the total company's value = $30 x 10,000,000 = $300,000,000
if replacing the current management increases the value of the stocks by 50%, they would rise to $45 per stock and the company's value would increase to $450,000.
You need to borrow $150 million to buy 50% of the shares and by doing so, the company's value will increase to $450 million, which means a $150 million gain.