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------------------------------------------------ How long will it take to drive 80 km at an average speed of 60 km/h?

Select one:

a. 1 hour and 20 minutes

b. 1 hour and 33 minutes

c. 1 hour and 15 minutes

d. 1 hour and 40 minutes

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]

  1. Identify the given values:

    • Distance: 80 km
    • Speed: 60 km/h

  2. Substitute the values into the formula:

    [tex]\text{Time} = \frac{80 \text{ km}}{60 \text{ km/h}}[/tex]

  3. Calculate the time:

    [tex]\text{Time} = \frac{80}{60} = \frac{4}{3} \text{ hours}[/tex]

  4. 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.

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