Today, Dipuda sold (2x+19) newspapers. But yesterday he sold (5x-8) newspapers. Find, how many newspapers did Dipuda sold today more than yesterday.

Today Ratul bought guava for x rupees, apple for (x+15) rupees and cucumber for (2x+3) rupee. Find, how much money did Ratul spent today on fruits.

Yesterday Deba went to bed at 10:25 p.m. But today he woke up at 6 : 10 a.m. Let's find, how long he slept.

Let a business-man have sold rice of 15 quintal , 19 quintal and 20 quintal in three consecutive months. Then how many quintal of rice had he sold per month as a average ?

Today I made 'x' number of flower garlands. Mir made 6 more than twice the number of garlands I made. In total, how many garlands we two have made.

Grandmother prepared coconut sweets today. She gave my brother 2 more sweets than she gave me and my sister got 3 less than me. Let us form a relation to find how many sweets my brother and sister got in terms of the unknown number of sweets I got.

I bought 2 exercise books. Cost of each exercise book is x rupees. My friend Imtiyaz bought 6 exercise books. But cost of each exercise book of Imtiyaz is 5 more than my exercise book. Calculate, how much money did I spent on exercise books and how much did Imtiyaz spent on his exercise books.

Today is the Foundation day of our school. Each student of class five will be given pencil and eraser worth 5 rupees. Each student of class six will be given compass worth of 10 rupees. There are x students present in class five, but number of students present in class six is 8 less than the number present in class five. Calculate the amount of money spent for pencils and erasers and also the amount spent for compasses.

The total revenue in Rupees received from the sale of x units of a product is given by R(x) = 3x^(2) + 36x + 5. Find the marginal revenue, when x = 5, where by marginal revenue we mean the rate of change of total revenue with respect to the number of items sold at an instant.

Find the number of positive integers, which can be formed by using any number of digits from 0, 1, 2, 3, 4, 5 but using each digit not more than once in each number. How many of these integers are greater than 3000? What happened when repetition is allowed?