Rahim obtained 60 marks out of 75 in Mathematics. Find the percentage of marks obtained by Rahim in Mathematics.

Antony secured 324 marks out of 400 marks. Find the percentage of marks secured by Antony.

Rohit obtained 45 marks out of 80. What per cent marks did he get?

Saina secure 70 marks in Science and 80 marks in Mathematics. Find a. the ratio of Sania's marks in Science to her marks in Mathematics. b. the ratio of Sania's marks in Mathematics to her marks is Science.

Ravi obtained 70 and 75 marks in first two unit tests. Find the number of minimum marks he should get in the third test to have an average of at least 60 marks.

A student draws a cumulative frequency curve for the marks obtained by 40 students of a class as shown below. Find the median marks obtained by the students of the class. (FIGURE)

In a class test, the sum of the marks obtained by P in Mathematics and science is 28. Had he got 3 marks more in Mathematics and 4 marks less in Science. The product of his marks, would have been 180. Find his marks in the two subjects.

The marks obtained by 30 students of Class X of a certain school in a Mathematics paper consisting of 100 marks are presented in table below. Find the mean of the marks obtained by the students.

The table shows the marks obtained by 25 students in a class test. Find the mean of the marks obtained

Amar obtained 410 marks out of 500 in an examination while his friend Rajiv gets 536 marks out of 600. Find whose performance is better.

The adjoining pie chart gives the marks scored in an examination by a student in Hindi, English, Mathematics, Social Science and Science. If the total marks obtained by the students were 540, answer the following questions.(i) In which subject did the student score 105 marks?(Hint: for 540 marks, the central angle = 360°. So, for 105 marks, what is the central angle?)(ii) How many more marks were obtained by the student in Mathematics than in Hindi?(iii) Examine whether the sum of the marks obtained in Social Science and Mathematics is more than that in Science and Hindi (Hint: Just study the central angles).