An EMBA student receives grades 78, 80, 82 and 84 in four subjects. If he/she wants to maintain an average of 80 how much he /she should get in the fifth subject?

An EMBA student receives grades 78, 80, 82 and 84 in four subjects. If he/she wants to maintain an average of 80 how much he /she should get in the fifth subject?

A 74

B 76

C 78

D 80

Solution

Correct Answer: Option B

suppose, he got x in fifth subject here, 78+80+82+84+x/5=80 or,x=76