How to convert 25 marks into 5 marks

In a class test, a student scored 21 marks out of 25 marks. The student's marks in percentage terms is:

In a class test, a student scored 8 marks out of 25 marks. The student's marks in percentage is:

In a class test, a student scored 8 marks out of 25 marks. The student's marks in percentage is:

Sobodh got 72 marks in Hindi, 68 marks in Science, 62 marks in Snakrit, 74 marks in Maths and 64 marks in English. The maximum marks of each subject are 80. How much overall percentage of marks did Subodh get ?

Sohan got 54 marks in Hindi, 65 marks in Science, 89 marks in Maths , 69 marks in Social science and 68 Marks in English . The maximum marks of each subject are 100. How much over all perecentage of marks did he get ?

A student has to secure 40% of marks to pass an examination. He gets only 45 marks and fails by 5 marks. The maximum marks are