Quote:
Originally Posted by landyaBhai
Cha, the answer is 20. There is a big long board (as shown in the figure). If you cut it at any point with a saw, it is going to produce two pieces of boards, which is going to take 10 minutes ... So if you want to make another cut, regardless of how many pieces you get, it is going to be 10 extra minutes ... I dont see how it could be 15 minutes ...

Thank you for staying on topic and giving the right answer. Yes, it takes 10 minutes to cut a board into two pieces. So no matter what, it will always take 10 minutes to cut the board. So the right answer is 20 minutes.