In the mathematics examination, 60% students of our class got more than 80 marks. If there are 50 students in our class, Let's find how many have got above 80.

(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.

30 students of my class were present. Total number of students in our class is 60. Let's find what percent of students have come to my class.

In Noorjahan's class 30% of the students are girls. There are 60 students in the class. Let's calculate to find the number of boys in Noorjahan's class.

0.23 parts of students of our class are girls. Let's find the percentage of girl students out of all the student of our class.

80 students appeared for the Madhyamilk Examination this year from our school. If 65% of students have passed. Let us find how many students have acutally passed.

The marks obtained by 30 students in a examination of a class are given below . Find their average.

Its raining heavily since morning. Hence only 20% student's were present in Alam's school. Total number of students in Alam's school is 1230 then Let's find how many students were acutally present in school.

The marks obtained in mathematics by 30 students of Class X of a certain scholl are given in table the below. Find the mean of the marks obtained by the students.

In Class XI of a school 40 % of the students study Mathematies and 30% study Biology.10% of the class study both mathematics and biology. If a student is selected at random from the class, find the probability that he will be studying Mathemetics or Biology.

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.