Question

A furniture store is having a sale on sofas and you're going to buy one. The advertisers know that buyers get to the store and that 1 out of 4 buyers change to a more expensive sofa than the one in the sale advertisement. Let X be the cost of the sofa. What is the average cost of a sofa if the advertised sofa is $400 and the more expensive sofa is $600?

Answer 1

Answer: The average cost of a sofa is $350.

Explanation:

Since we have given that

Cost of Advertised sofa = $400

Cost of more expensive sofa = $600

So, the average cost of a sofa is given by

`(200* 1+300* 3)/(4)\\\\=(200+1200)/(4)\\\\=(1400)/(4)\\\\=\$350`

Hence, the average cost of a sofa is $350.