Question

A housewife uses 10kg of wheat ,20kg fuel,5kg sugar and 2kg oil prices per kg of these items are 1.50 rupees , 50 paise, 2.80 rupees and 10 rupees respectively taking quantities used as weights find out the weighted anithmetic average of the prices?

Answer 1

See the table shown in attachment.

Use the formula in given attachment.

Answer 2

First, we have to calculate total cost of products separately.

1.  Wheat- 1.50X10= 15 Rupees

2. Fuel- 0.50X20= 10 Rupees

3. Sugar- 2.80X5=14 Rupees

4. Oil- 10X2= 20 Rupees

Now, calculating arithmetic average,

=  Sum of Total price of all products

Number of products

= 15+10+14+20/4

= 59/4

= 14.75

Answer:  The weighted arithmetic average of the prices is 14.75.