+0  
 

Best Answer 

 #1
avatar+129852 
+5

Distance / Time = Rate  .....so.....

(1 + 2/9) mi / (1 + 1/7) hr =

(11/9) mi / (8/7) hr =

11/9 x 7/8  = 

77/72  mi/ hr =

about 1.07 mi/hr 

 

  

 Apr 12, 2015
 #1
avatar+129852 
+5
Best Answer

Distance / Time = Rate  .....so.....

(1 + 2/9) mi / (1 + 1/7) hr =

(11/9) mi / (8/7) hr =

11/9 x 7/8  = 

77/72  mi/ hr =

about 1.07 mi/hr 

 

  

CPhill Apr 12, 2015

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