SOLUTION: A driver record an average speed to be 120km/h for 30minutes and 80km/h for 45minutes A.calculate how far the driver traveled to her destination

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Question 1142600: A driver record an average speed to be 120km/h for 30minutes and 80km/h for 45minutes
A.calculate how far the driver traveled to her destination

Answer by ikleyn(52847) About Me  (Show Source):
You can put this solution on YOUR website!
.
The distance traveled at the average rate of 120 km/h is

    (average rate)*time = 120*0.5 = 60 kilometers.




The distance traveled at the average rate of 80 km/h is

    (average rate)*time = 80%2A%283%2F4%29 = 60 kilometers.



The total distance is  60 km  + 60 km = 120 km.



ANSWER.  The driver traveled 120 kilometers.


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Side note.   We can not state that the distance from the start to the destination is  120  kilometers,

                    since the problem does not say that the path / (the road) is a straight line.

                    But we can state (and I do it) that the entire traveled distance is 120 kilometers.