Question

A candidate obtained the following percentage of marks in an examination English $60$, Maths $90$, Physics $75$, Chemistry $66$. If weights $2,4,3,3$ are allotted to these subjects respectively, then the weighted mean is given by

• A. $\frac{60+90+75+66}{2+4+3+3}$
• B. $\frac{60\times 2+90\times 4+75\times 3+66\times 3}{2+4+3+3}$
• C. $\frac{60\times 2+90\times 4+75\times 3+66\times 3}{4}$
• D. $\frac{60+90+75+66}{4}$

Answer 1

The correct option is B $\frac{60\times 2+90\times 4+75\times 3+66\times 3}{2+4+3+3}$

$Mean=$ $\frac{60\times 2+90\times 4+75\times 3+66\times 3}{2+4+3+3}$