SOLUTION: a car left point A at 9:00 am arrived at point B at 9:24 the distance from point A to point B is 20 km. what is the average speed in km per hour

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Question 1189987: a car left point A at 9:00 am arrived at point B at 9:24 the distance from point A to point B is 20 km. what is the average speed in km per hour
Found 2 solutions by math_tutor2020, ikleyn:
Answer by math_tutor2020(3817)   (Show Source): You can put this solution on YOUR website!

From 9:00 AM to 9:24 AM is a gap of 24 minutes.
24 min = 0.4 hour (divide by 60 to convert from minutes to hours)

The car travels 20 km in 0.4 hours
speed = distance/time
speed = (20 km)/(0.4 hour)
speed = (20/0.4) km per hour
speed = 50 km per hour
Answer by ikleyn(52803)   (Show Source): You can put this solution on YOUR website!
.
a car left point A at 9:00 am arrived at point B at 9:24
the distance from point A to point B is 20 km. what is the average speed in km per hour
~~~~~~~~~~~~~~~~ 

To find the average speed, you should divide the travel distance by the travel time,
in consistent units.


The travel distance is 20 km (given).


The travel time is 24 minutes, or   =  of an hour.


THEREFORE, the average speed is


     =  = 10*5 = 50 kilometers per hour.    ANSWER

Solved.



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