The difference between the selling prices of some articles if sold for Rs.12 per article instead of Rs.9 per article is Rs.150. If the sold price of these articles is Rs.250 then find the selling price of 21 articles if profit earned is 20%.

A shopkeeper sold sarees at Rs. 266 each after giving 5 % discount on labelled price. Had he not given the discount, he would have earned a profit of 12 % on the cost price. What was the cost price of each saree? 

The cost of a new scooter is Rs 25000, at the end of each year its value becomes 80% of the starting price of that year, what will be the cost of the scooter after 3 years?

A men sells his cycle at 6% profit. Had he sold it at 15% profit, he would have received 180 Rs. More. What is the cost price of the cycle?

An item costing Rs. 840 was sold by a shopkeeper at a gain of 10 % and it was again sold by the new buyer at a loss of 5 %. Find selling price of the item is: 

If a shopkeeper increases the selling price of an article by 10% and gets a profit of 37.5% on its cost price. If he increases the selling price by 25% above on old selling price then he gets a profit of ₹ 225 on his cost price. Find the cost price of the article?

An article is sold for Rs 4,777 after giving a discount of 15%. What is the marked price of the article?

The value of a mobile phone depreciates at the rate of 10% every year. It was purchased 3 years ago. If its present value is Rs. 6561/-, its purchase price was.