Manual calculations pls! (No Excel files) I need complete solutions and correct answers pls! Ill upvote as soon as possible! I need help with this one. *Not more than 2 hours of answering :((

Three mutually exclusive earth-moving pieces of equipment are being considered by a construction company in the Philippines. The estimated cash flows are given below: 1. Using a 5 -year study period and MARR of 12% compare the three alternatives using ERR method. (12 points) 2. What is the equivalent annual worth of the chosen alternative? ( 3 points)