

  
 Heyif we drink two sodas at the rate of 45second but we drink 600 liters at a time what do you think our time would be if we did that but with 900 liters?  
  


  
 Well we have to set up like y=k/x so it would be 45=k/600 you would multiply 600 on both side to get 27,000  
  





  
 Wow it's crazy how you did that in your head but you didn't answer the question  
  


  
 I'm not finished yet so after that you take 27,000 and divide that by 900 and you get 30.  
  





  
 But I thought you would have to multiply both sides by 900  
  


  
 You don't once you have the constant "27,000" so from there you would just divide.  
  


