Cost of 36 pens and 42 Pencils is Rs 460. What is the cost of 18 pens and 21 pencils?

A Microwave oven is sold in Hyderabad for Rs.M. A retailer, Elahi from Hyderabad went to Madras and bought it for 25% less (when compared to the price in Hyderabad). He spends Rs.1,000 on transport to bring it from Madras to Hyderabad. He sold it in Hyderabad for Rs.M making a profit of 10%. Find the value of M (in Rs.).

If a man estimates his loss as 20% of the selling price, then his loss percent is:

Profit obtained on selling an article for Rs 540 is equal to the loss incurred on selling the article for Rs 370. if selling price is Rs. 910, Then what is the profit percentage? 

A man buys a table and a chair for 500. He sells the table at a loss of 10 % and the chair at a gain of 10 %. He still gain ₹10 on the whole. The cost price of chair in rupees is 

If an item is sold for Rs. 270, there is a loss of 10 percent on it , then what will be the cost price of that item?

Purchased a table for 13500 and sold it 11000. What is his loss percentage?

A wholesaler sold a water purifier at a loss of 40%. If the selling price has been increased by Its. 125, then wholesaler will get the profit of 10%. What was the cost price of the purifier?