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a team of five people average at 68 inches tall. one person joins their team and now they average at 70 inches tall. how tall is the last guy?

 May 20, 2015

Best Answer 

 #1
avatar+129609 
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[5(68) + x ] / 6 = 70       Multiply both sides by 6

 

5(68) + x  =  420  

 

340 + x  =  420     subtract 340 from each side

 

x = 80  inches tall

 

 

 May 20, 2015
 #1
avatar+129609 
+5
Best Answer

[5(68) + x ] / 6 = 70       Multiply both sides by 6

 

5(68) + x  =  420  

 

340 + x  =  420     subtract 340 from each side

 

x = 80  inches tall

 

 

CPhill May 20, 2015

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