Answers to Assignment


 


1. Let x = minutes used by Cindy in the whole month of July


.20 x = .40


x = .40 / .20


x = 72 minutes


 


2. Let x = be the time that the trip had took


62 miles / hour = 149 miles / x


62 miles / hour (x) = 149 miles


x = 149 miles / 62 miles / hour


x = 2.40 hours


 


3. Let x = be the number of servings


   3.25 (1.25) + 8.75 (2) = 3x


  4.0625 + 17.5 = 3x


  21.5625 = 3x


  x = 7.1875


   or ≈ 7 servings / people


 


 



Credit:ivythesis.typepad.com



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