If in an examination different weights are assigned to different … - Vidyadip

MCQ

If in an examination different weights are assigned to different subjects. Physics $(2)$, Chemistry $(1)$, English $(1) $ Mathematics $(2)$. If a student scored $60$ in Physics, $70$ in Chemistry, $70$ in English and $80$ in Mathematics, then his weighted $A.M.$ is :-

A
$60$
✓
$70$
C
$80$
D
None of these

✓

Answer

Correct option: B.

$70$

b
Weighted $A.M.$

$=\frac{2 \times 60+1 \times 70+1 \times 70+2 \times 80}{2+1+1+2}=70$

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