The average speed is 104 kilometer per hour
Solution:
Given that,
A car drives 494 km in 4 hours 45 minutes
To find: Average speed in kilometers per hour
The average speed is given by formula:
[tex]Average\ speed = \frac{distance}{time}[/tex]
From given,
Distance = 494 km
Time = 4 hours 45 minutes
We know that,
1 hour = 60 minutes
Therefore,
[tex]45\ minutes = \frac{45}{60}\ hour\\\\45\ minutes = 0.75\ hour[/tex]
Thus,
time = 4 hours 45 minutes = 4 hour + 0.75 hour = 4.75 hour
Thus average speed is:
[tex]Average\ speed = \frac{494}{4.75}\\\\Average\ speed = 104[/tex]
Thus average speed is 104 kilometer per hour
