Verano Inc. has two business divisions long dash a software product line and a waste water​ clean-up product line. The software business has a cost of equity capital of 12​% and the waste water​ clean-up business has a cost of equity capital of 8 %. Verano has​ 50% of its revenue from software and the rest from the waste water business. Verano is considering a purchase of another company in the waste water business using equity financing. What is the appropriate cost of capital to evaluate the​ business?