It needs 120% tax to import a machine from abroad. Let’s work out the cost of the machine here after paying the tax if it costs Rs. 300000 in abroad.

I have Rs. 50 with me. I spent 12% of the sum of Rs. 50 to purchase a pen. Let’s work out the amount I spent for purchasing the pen.

Trisha has bought a book from the book stall of Milan dada. Milandada gave her discounts of 10% and 5% respectively. Let’s work out how much Trisha paid to Milandada if the M.R.P. of the book was Rs. 200.

Let's get 15% of discount if the bill of electricity is paid in time. My aunt got a rebate of Rs. 54 paying the bell in time. Let's work out the total amount of the bill.

A machine costs 5,00,000. If its value depreciates 15% in the first year, 13 (1/2) % in the second year, 12% in the third year and so on. What will be its value at the end of 10 years, when all the percentages will be applied to the original cost? [Total depression =15 + 13(1/2) + 12+ ......10 terms S_(n) = 10/2[30-13.5] = 82.5% therefore after 10 years original cost = 100 - 82.5 = 17.5, i.e. 17.5% of 5,00,000.

My friend Rabeya's father has a furniture shop in Andul.I often visit their shop with Rabeya,This time . I found many people working in their shop.Rabeyas father has got orders from 7 schools, to make chair, tables and almirahs.From each school he got orders for 10 chairs, 10 tables and 10 almirahs for keeping books.Let me find what is the total amount of order Rabey's father has got from 7 schools.Total cost of 10 chairs,10 table and 10 almirahs is Rs. 11,42,575.

A manufacturer reckons that the value of a machine, which costs him Rs. 15625,will depreciate each year by 20%. Find the estimated value at the end of 5 years.

There are two types of fertilisers F_(1) and F_(2),F_(1) consists of 10% nitrogen and 6% phosphoric ancid and F_(2) consists of 5% nitrogen and 10% phosphoric acid. After testing the soil conditions, a farmer finds that she needs atleast 14 kg of nitrogen and 14 kg of phosphoric acid for her crop. If F_(1) costs Rs. 6/kg and F_(2) costs Rs. 5/kg determine how much of each type of fertiliser should be used so that nutrient requirements are met at a minimum cost. What is the minimum cost?

Mithu wants to buy 4 exercise books. If exercise book costs Rs. 12.75, let’s find how much money Mithu will need.