Answer : The correct option is, (A) 7 hours 42 minutes
Explanation :
Average speed : It is defined as the ratio total distance to total time.
Formula used :
As per question,
Total distance traveled = 492.8 mile
Average speed = 64 mile/hour
Now put all the given values in the above formula, we get:
As we know that, 1 hour has 60 minutes.
7.7 hours
= 7 hr + 0.7 hr
= 7 hr + 0.7 × 60 min
= 7 hr + 42 min
Therefore, the the take them to reach their destination will be, 7 hours 42 minutes.