Question

the mean marks secured a student in five subjects is 75.if on more subject in which he secured 72 marks is included,calculate the new mean ​

Answer 1

Answer:

Marks obtained in 5 subject = 5× 75 = 375

now, marks in fifth subject = 72

total marks in 5 subjects become= 375+72 = 447

average = 447/6=74.5