Trying to do this long hand..... please assist and show work.

The Suboptimal Glass Company uses a process of capital rationing in its decision making. The firm's cost of capital is 10 percent. It will only invest $77,000 this year. It has determined the internal rate of return for each of the following projects. Project Internal Rate of Return 21% mo Project Size $10,500 30,500 25,500 10,500 10,500 20,500 10,500 Select the projects that the firm should accept. If Projects A and B are mutually exclusive, how would that affect your overall answer? That is, which projects would you accept in spending the $77,000