Help with my Finance Practice!

Blossom and Telecommunications Corporation has three divisions. The names of these divisions, along with the after-tax cost of capital for each division and the market value of the assets in each division, are as follows: What is the overall after-tax cost of capital for Blossom and Telecommunications? (Round intermediate calculations to 4 decimal places, e.g. 1.2514 and final answer to 2 decimal places, e.g. 15.25\%.) After-tax cost of capital %