The minimum price that the barber must charge to increase his salary to $4,000 for each of the 200 haircuts is A. $25.
Data and Calculations:
Charge per haircut = $20
Total cost per month = $4,000
Monthly salary = $3,000
Other costs per month = $1,000 ($4,000 - $3,000)
Minimum number of haircuts per month = 200
Expected monthly salary per month = $4,000
Total new monthly expenses = $5,000
Minimum price to charge per haircut = $25 ($5,000/200)
Thus, the minimum price that the barber must charge to increase his salary to $4,000 without increasing the number of haircuts is $25.
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