Question 1149092
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The road from A to B is 10km uphill followed by 20km downhill.  A motorcyclist averages 36km/h uphill and 90km/h downhill. 
Calcilate the average speed from B to A
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The steepness &nbsp;<U>uphill</U> &nbsp;from A to &nbsp;B &nbsp; can be &nbsp;TOTALLY &nbsp;different from  that from &nbsp;B &nbsp;to &nbsp;A.


Same for steepness &nbsp;<U>downhill</U> &nbsp;from &nbsp;A &nbsp;to &nbsp;B, &nbsp;comparing with that from &nbsp;B &nbsp;to &nbsp;A.


The given data is enough to calculate the average speed from &nbsp;A &nbsp;to &nbsp;B.


Bu it may be &nbsp;TOTALLY &nbsp;different from the average speed from &nbsp;B &nbsp;to &nbsp;A.



We simply &nbsp;HAVE &nbsp;NO &nbsp;necessary data to answer the question in the form, &nbsp;how it is &nbsp;POSED &nbsp;IN &nbsp;THE &nbsp;POST.


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I clearly understand what you only &nbsp;"copy and paste" &nbsp;and do not think on what is written in your post.


I also clearly understand, &nbsp;that you will refer to your teacher, &nbsp;saying that the problem came from him &nbsp;(ot from her) 

exactly in this form.



But, &nbsp;in any case, &nbsp;the person who created this post, &nbsp;must know that the problem is posed 


&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;I N C O R R E C T L Y.