# Finding optimal number of advertising days

Assume Nail Mania advertises in the local newspaper. Each day it advertises costs $100. Over the past several months, Nail Mania has conducted market research and developed the following information

Number of days advertised per week Number of customers per week

0 100

1 200

2 290

3 355

4 375

5 390

6 400

7 400

If the net revenue (payments less cost of goods sold) is $5, how many days of advertising should Nail Mania buy each week?

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#### Solution Preview

Please refer attached file for better clarity of table.

Number of days advertised per week Total Ad. Cost Number of customers MC*

n TC=100*n Q Change in TC/change in Q

0 0 ...

#### Solution Summary

Optimal number of advertising days is found.