Question

the marks scored by a student in five subject or 80, 75, 62,50 and 91 how much score should be scored in the 6th subject to make his average 74

Answer 1

sum of five sub.=80+75+62+50+91
so average marks=(80+75+62+50+91+x)÷6
(358+x)÷6
we will do 74×6=444
so 444 must be the sum of all subjects
so 444-358=86
SO HE MUST SCORE 86 MARKS TO MAKE HIS AVERAGE 74