Answer: The correct option is
(D) 0.85 miles/min.
Step-by-step explanation: We are given to find the unit rate for the following situation :
"driving 140 miles in 2 hour 45 min."
We know that
1 hour = 60 minutes.
So, we get
2 hours 45 minutes = 2 × 60 + 45 = 120 + 45 = 165 minutes.
Now, we will use the UNITARY method.
In 165 minutes, distance drove = 140 miles.
Therefore, in 1 minutes, distance drove is given by
[tex]\dfrac{140}{165}=0.848484...=0.85~\textup{miles}.[/tex]
Thus, the required unit rate is 0.85 miles/minute.
Option (D) is CORRECT.
