A stationer bought 2000 books. He distributed 200 books to the students from poor economic background. He sold each remaining books at Rs 10 more than the cost price of each and gained 8% . Find the cost price of each book.​ ​

The architect's side view drawing of a saltbox-style house shows a post that supports the roof ridge. the support post is 8 ft tall. the distance from the front of the house to the support post is less than the distance from the post to the back of the house. how far from the front of the house is the support post positioned?