Ryan's first period class begins at 8:10 and ends at 9:00. His second period class begins at 9:05 and ends at 9:55. His third period class begins at 10:00 and ends at 11:05. If this pattern continues, when does Ryan's fourth period class begin and end?

Thank you so much for your reply! I would like to know how to do this problem on my own too in the future though, so could you please tell me how you arrived at that answer? Thanks!!!

the sequence is such that every two successive periods have the same length hence given the third period duration you can obtain the fourth period particulars