A man sells a cow at 15% loss. If he would have sold it for more Rs150, then he would have 10% profit. Find the cost price of the cow.

A shopkeeper sells an article at 15% gain. Had he sold it forRs 18 more, he would have gained 18%. Find the cost price of the article.

An article was sold at a loss of 15%. If it was sold for Rs.1,035 more, then there would have been a profit of 8%. Find the cost price of the article.

A book vendor sold a book at a loss of 10 %. Had he sold it for Rs. 108 more, he would have earned a profit of 10%. Find the cost of the book.