Street Barber Shop pays 50 per month for water for the firs

Street Barber Shop pays $ 50 per month for water for the first 13,000 gallons and $ 2.50 per thousand gallons above 13,000 gallons. Calculate the total water cost when the barber shop uses 12,000 gallons, 15,000 gallons, and 18,000 gallons.

Solution

total water cost for:

1.12000 gallons=$50

2.15,000 gallons=$50+(2.5*2 )=$55

3. 18,000 gallons=$50+(2.5*5)=$62.5