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 :
[tex]\text{Average speed}=\frac{\text{Total distance}}{\text{Total time}}[/tex]
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:
[tex]\text{Average speed}=\frac{\text{Total distance}}{\text{Total time}}[/tex]
[tex]64mile/hour=\frac{492.8mile}{\text{Total time}}[/tex]
[tex]\text{Total time}=\frac{492.8mile}{64mile/hour}[/tex]
[tex]\text{Total time}=7.7hour[/tex]
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
[tex]\text{Total time}=7\text{ hour }42\text{ minute}[/tex]
Therefore, the the take them to reach their destination will be, 7 hours 42 minutes.
