Answer :
To determine how long it will take to drive 80 km at an average speed of 60 km/h, we use the formula for time, which is:
[tex]\text{Time} = \frac{\text{Distance}}{\text{Speed}}[/tex]
Identify the given values:
- Distance: 80 km
- Speed: 60 km/h
Substitute the values into the formula:
[tex]\text{Time} = \frac{80 \text{ km}}{60 \text{ km/h}}[/tex]
Calculate the time:
[tex]\text{Time} = \frac{80}{60} = \frac{4}{3} \text{ hours}[/tex]
Convert the time from hours to hours and minutes:
- [tex]\frac{4}{3}[/tex] hours is equal to 1 whole hour and the remaining [tex]\frac{1}{3}[/tex] of an hour.
- To convert [tex]\frac{1}{3}[/tex] of an hour into minutes, multiply by 60 (since there are 60 minutes in an hour):
[tex]\frac{1}{3} \times 60 = 20 \text{ minutes}[/tex]
Hence, it will take 1 hour and 20 minutes to drive 80 km at an average speed of 60 km/h.
So, the correct option is a. 1 hour and 20 minutes.
