If the entire chart represents 100 homes, how many households have a pet bird? A. Cannot be Determined

B. 1

C. 50

D. 10

Let flat rental fee be F

And per mile charge be M

We know that Bob drove 138 miles and was charged $112.96

And Carl drove 209 miles and was charged $142.78.

⇒ F + 138×M = 112.96 (i)

And F + 209×M = 142.78 (ii)

Subtracting (i) from (ii)

71×M = 29.82

⇒ M = 0.42

Substituting value of M in (i)

⇒ F + 138×0.42 = 112.96

⇒ F + 57.96 = 112.96

⇒ F = 55

So the fixed charge was $55 and the per mile charge was $0.42