PADI RDP Table and eRDPML Exam - Imperial

I dive to 59 feet for 22 minutes. After a 30 minute surface interval, I plan to dive to 50 feet. What is the maximum allowable time for the second dive? - Answer- 61 Minutes - Using the Dive Planning mode on the eRDPML, enter No for Multilevel Dive, enter Yes for First Dive, enter 59, hit enter after seeing NDL, enter 22 minutes for ABT - pressure group is H. Enter the surface interval - 30 - the new pressure group is D. Enter next depth - 50ft - the ANDL is 61 minutes.Using RDP Table 1 find the next greatest depth on the top row - 60ft - and follow the column down to the next greatest time - 23 - go across to find pressure group H. In RDP Table 2, follow H to find 30 minutes (between 29-37 minutes) and follow that column down to pressure group D. Go to RDP Table 3, follow the depth - 50ft - across to meet D. The number in the blue box - 61 - is the allowed bottom time. I am planning to make two dives. The first dive is to 60 feet for 45 minutes, and the second dive is to 60 feet for 35 minutes. How long would I have to stay on the surface (minimum surface interval) to do these two dives safely? - Answer- 1 hour and 4 minutes - Using the Surface Interval mode on the eRDPML, enter Yes for First Dive, enter 60ft, hit enter after seeing NDL, enter 45 minutes for ABT. Enter second depth of 60ft, hit enter after seeing NDL, enter second time of 35 minutes - the minimum surface interval is 1 hour and 4 minutes.Using RDP Table 1 find the depth on the top row - 60ft - and follow the column down to the next greatest time - 47 - go across to find pressure group S. On RDP Table 3, follow the 60ft row across until you find a time in the blue box equal to or greater than 35 minutes - follow this up to pressure group F. Go to RDP Table 2, follow the F column up from the bottom until it meets the S row - the minimum surface interval is 1 hour and 4 minutes.See the RDP/eRDPML Instructions for Use booklet I dive to 56 feet for 47 minutes. After a 30 minute surface interval I do a second dive to 56 feet. Losing track of time, I notice my bottom time is now 25 minutes. According to the General Rules, what should I do? - Answer- Ascend (go up) right away to 15 feet and stay there for at least 8 minutes before going to the surface, and not dive for six hours. A group of Advanced Open Water Divers plans to make two dives. The first dive is on a reef in 90 feet of water for 20 minutes. The group then remains on the surface for 1 hour. The second dive is on a wreck in 60 feet of water, with a planned bottom time of 30 minutes. What will be the ending pressure group after the second dive? - Answer- S - Using the Dive Planning mode on the eRDPML, enter No for Multilevel Dive, enter Yes for First Dive, enter 90ft, hit enter after seeing NDL, enter 20 minutes for ABT - pressure group is M. Enter the surface interval - 1 hour - the new pressure group is D. Enter next dept