Question : Akshay has 30 articles, each having the same cost price. He marked the price of each article at 30% above its cost price. He sold 15 of the articles at a discount of 20% each, and the remaining 15 articles at a discount of 10% each, thereby gaining a total profit of Rs. 630.

Question : An article was sold at a profit of 12%. If the cost price is 10% less and the selling price would be Rs. 5.75 more, there would be a profit of 30%. Then at what price it should be sold to make a profit of 20%?

Question : A radio is sold at a profit of 20%. Had it been sold for Rs. 60 more the profit would have been 30%. The cost price of the radio is: