If a car travels at an average speed of 50kms/hr, how much time would it take to complete a trip of 75 kilometers?

Answer 1

Average speed is the ratio between Total Distance Traveled and Total Time Traveled.

One way you can solve this problem is by thinking in terms of proportions:

50 km / 1 hour = 75 km / ? hours

By cross-multiplying and dividing, you can determine how many hours the trip takes.

Without giving away the answer, you should get more than one hour :-)

A second approach is to use the equation:

Average Speed = Distance Traveled / Time

With some algebraic manipulation, you can derive:

Time = Distance Traveled / Average Speed

Hope that helps!