Answer: 5 cents
Step-by-step explanation:
Given
Flow rate of water is [tex]3.5\ gal/min[/tex]
At this rate it cots [tex]\$1.90[/tex] for 10 minutes
Volume that flown in this time
[tex]\Rightarrow V=3.5\times 10\\\Rightarrow V=35\ \text{Gallons}[/tex]
So, [tex]\$1.90[/tex] is charged for 35 gallons of water
Using unitary method, 1 gallon costs
[tex]\Rightarrow 1\ \text{gallon}=\dfrac{1.9}{35}\\\\\Rightarrow 1\ \text{gallon}=\$0.0542\ \text{or}\ 5.4\ \text{cents}\\\text{Round off to nearest cent}\\\Rightarrow 1\ \text{gallon}=5\ \text{cents}[/tex]
