The cash difference between the selling prices of an article at a profit of 4% and 6% is Rs 3. The ratio of two selling prices is

A shopkeeper cheats to the extent of 10% while buying and selling, by using false weights. His total gain is.

A man buys an article for Rs. 27.50 and sells it for Rs 28.60. Find his gain percent

If books bought at prices ranging from Rs. 200 to Rs. 350 are sold at prices ranging from Rs. 300 to Rs. 425, what is the greatest possible profit that might be made in selling eight books ?