Question

mean marks obtained by a student is 15. he secured 8 marks in English 12 in economics 18 in mathematics and 9 in physical education find his marks in business studies

Answer 1

Mean marks is Total marks ÷ No of subjects

Let marks of business studies be x

So, we have

15 = (8 + 12 + 18 + 9 + x) ÷ 5

75 = 47 + x

x = 75 - 47 = 28

Marks in business studies is 28.