TR Co has a gearing level of 1:3 debt : equity. TR is considering diversifying into a new market without changing its existing gearing. B Co is already operating in the new market. B Co has an equity beta of 1.05 and a gearing level of 1:4 debt : equity. Both companies pay 30% corporation tax. (1) (填空题)<img src="https://static.zxtiku.com/wangke/imgs/topic/26bc8d0dae5347b21f3bc4b376de5814.jpg"/> (2) (填空题)<img src="https://static.zxtiku.com/wangke/imgs/topic/ae910f2632fda05dc4ba0f3b4501179e.jpg"/>