[ mod note: moved from general physics so homework template is missing ] At the end of each lesson, the lecturer gives a problem. The question is: A rectangular, flat-bottomed rowboat has a mass of 120 kg when empty. It's 3 meters long, 1 meter wide, and 0.24 meters deep. How many 85 kg people could it hold before swamping? My answer was 7, but apparently according to the video the answer is 6. In addition, he gives a final answer of 590 kg without including the boat weight. But if I multiply 6*85, it does not equal 590. So, I am really confused since he merely provides the final answer of 6 people. Can anyone help? Thank you.