The cost is $0.60 per kilometer.
Step-by-step explanation:
Given,
Charges for 110 km = $186
Charges for 145 km = $207
Charges for 170 km = $222
Let,
x be the cost of one kilometer.
y be the initial fee.
According to given statement;
110x+y=186 Eqn 1
145x+y=207 Eqn 2
170x+y=222 Eqn 3
Subtracting Eqn 1 from Eqn 2
[tex](145x+y)-(110x+y)=207-186\\145x+y-110x-y=21\\35x=21[/tex]
Dividing both sides by 35;
[tex]\frac{35x}{35}=\frac{21}{35}\\x=0.60[/tex]
The cost is $0.60 per kilometer.
Keywords: linear equation, subtraction
Learn more about linear equations at:
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