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.

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 person plays a game of tossing a coin thrice. For each head, he is given Rs 2 by the organiser of the game and for each tail, he has to give Rs 1.50 to the organiser. Let X denote the amount gained or lost by the person. Show that X is a random variable and exhibit it as a function on the sample space of the experiment.

I have Rs20. I spent Rs5. find what part I spent and what part is left with me.

My grandfather gave me ₨.50 for visiting a fair. I spent 70% of the money at the fair and rest I saved in my piggy bank. Let me find, how much I spent and much I saved.

(Diet Problem): A dietician wishes to mix two types of foods in such a way that vitamin contents of the mixture contain atleast 8 units of vitamin A and 10 units of vitamins C. Food I contains 2 units/ kg of vitamins A and 1 unit/kg of vitamin C. Food II contains 1 unit/kg of vitamin A and 2 units/kg of vitamine C. It costs Rs. 50 per kg to purchase Food I Rs. 70 per kg to purchase Food II. Formulate this problem as a linear programming problem to minimise the cost of such a mixture.

Let's divide Rs. 9,000 among three friends in such a way that the second friends get's twice the amount the first friend gets, and the thrid friend gets half of the total sum of money two friend have got. Let's calculate how much amount of each friend will get.

I have Rs. x, My father gives me Rs.2, I shall have Rs. 18. form the euation and solve it.

I have Rs. 150. With 0.3 part of my money I bought exercise books and with 0.4 part I bought a story book. Let me find, what amount of money is left with me.

The total number of Rs. 5 and Rs. 10 coins in my bag 20. If I have Rs. 145 in my bag. Let's calculate the number of coins of each king I had in the bag.