Question

Find the weighted A.M. of the price for the following data.

Food stuff	Quantity(in kg) $w_i$	Price per kg (in Rs.) $x_i$
Rice	$25$	$30$
Sugar	$12$	$30$
Oil	$8$	$70$

Answer 1

Here the x-values are the price of the given food stuff and the weights associated are the quantities (in Kg)
Then, the W.A.M $=\frac{w_1{x}_1+w_2{x}_2+w_3{x}_3+....+w_n{x}_n}{w_1+w_2+w_3+......+w_n}$
$=\frac{25\times 30+12\times 30+8\times 70}{25+12+8}=\frac{1670}{45}$
$=Rs.37.11$.