Nathan began working on his report on penguins at 3:15 p.m. He worked for 1 5/6 hours and then stopped to have dinner. He started working again at 6:32 p.m. and worked for 1 1/3 hours longer. How many minutes did Nathan work on the report in all?
considering only the time Nathan was actively working on the problem, he worked for 1 5/6 + 1 1/3 = 1 5/6 + 1 2/6 = 2 7/6 = 3 1/6 hours.