Question 998504: The family reached a motorway at 11:00 what was their average speed for the next hour in car journey
Answer by Theo(13342)   (Show Source):
You can put this solution on YOUR website! you are mising some key information here.
your statement:
The family reached a motorway at 11:00 what was their average speed for the next hour in car journey.
the general formula used is rate * time = distance.
if you have 2 of those components, you can solve for the third.
you actually gave none of those components.
the fact that the family reached the motorway at 11:00 says nothing about the rate that they were traveling at, nor the time that they were traveling at, nor the distance they traveled.
if you were looking for their average speed, you need to provide the time they took to travel the distance and the distance that they traveled.
the average speed means the same thing as the rate in the formula rate * time = distance
example:
the family arrived at the motorway at 11:00 AM and arrived at their destination at 5:00 PM and they traveled a distance of 120 miles. What was their average speed.
now you can solve because you have time and distance, so you can solve for rate in the formula rate * time = distance.
the time is 5:00 PM minus 11:00 AM = 6 hours.
the distance = 120 miles.
rate * time = distance becomes rate * 6 = 120.
solve for rate to get rate = 120/6 = 20 miles per hour.
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