Question 608584
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Hi
A man travels 42km in 45 min what is his average speed in km/hr
Let x represent distance traveled in 60min to find km/hr
 Inquiry sets UP the Proportion   
   {{{42km/45 = x / 60}}}     |Cross Multiplying to solve
       45x = 42·60
         x = 42·60 / 45  
         x = 14*4 = 56 km/hr