Question

A student obtained 82 marks in commerce ,89 in accounts, 90 in maths, 70 marks in english. Calculate weighted means of the marks if weight given to the subjects are respectively 3,5,3 and 1.

Answer 1

Mark in commerce = 82
Weight = 3

Mark in accounts = 89
Weight = 5

Mark in maths = 90
Weight = 3

Mark in english = 70
Weight = 1

Weighted mean = (82×3 + 89×5 + 90×3 + 70×1)/(3+5+3+1)

= (246+445+270+70)/(12)

= 1031/12

= 85.917

Hence weighted mean of the marks is 85.917

(To understand weighted mean in a simple way, just consider instead of getting 82 marks in commerce, you got three 82 marks in 3 commerce subjects and likewise)