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Find the sum of all positive integers $n$ such that \($1.2n-4.4<5.2$.\)

 Apr 4, 2020
 #1
avatar+111329 
+1

1.2n - 4.4 < 5.2   add 4.4 to both sides

 

1.2n <  9.6     divide  both sides  by  1.2

 

n <  8

 

So.....the positive integers  hat satisfy this are

 

1,2,3,4,5,6,7

 

And  their sum =   (7)(8) / 2 =  56 / 2   =  28

 

 

cool cool cool

 Apr 4, 2020

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