At a programme of our school, we seated ourselves in rows. In each row there are 15 students. Let us form a solution to find total number of student seated.

If in praxis Business school 40 students like chocolate while 30 like cake,if there are 10 students who like both and an equal number of students who like none of them. Find the total number of students at Praxis Business school.

The number of students in a class is 60 . The average of the ages of the boy-students is 14.5 years and the average of the ages of the girl-students is 16 years . If the collective average of the total students be 15 years , then find the number of boy-students and the number of girl-students.

(ii) Today, 7 students of our class are absents. There are 35 students in our class. Let us find the percentage of students persent today in class.

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.

Today, my father bought 7 packets of biscuits. But yesterday my brother bought 5 packets of biscuit. If each packet has 10 biscuits, let us find the total number of biscuits.

In a garden trees are planed in rows. The number of trees in each row is 5 less than the number of rows. If the total number of trees planted be 336, then find the numbner of trees planted in each row.

An educational trip to Gadiyara had been arranged by our school for collection environment related date. 32 studens of class six, 36 students of class seven and 28 students of class eight are going for the trip, few small school buses have been arranged so that each bus must accoumodate equal number of studentsfrom the three classes. Let us find ,total number of buses required and number of students each but will accomodate.

Each x students of class V is given y books. But each x students of class VI is given (y+3) books. Again each (x+11) students of class VII is given (y+10) books. Calculate to find, how many books were given to the students of class V, VI and VII. Also find the total number of books given out in their classes.

In our shop, there are many oil pastel colour boxes. Each box has 12 pastel colours. Without counting, let us form a relation to find how many pastel colours are there in the shop.

In how many ways can 5 first year students and 3 second year students be seated in a row so that no two second year students may sit together ?