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Conan wrote down 10 consecutive positive integers.  If the sum of the 5 smallest positive integers is A, then waht is the sum of the 5 largest positive integers in terms of A?

 Dec 3, 2019
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Let's call the smallest number x

So x+x+1+x+2+x+3+x+4 = 5x+10 = A

Then x+5+x+6+x+7+x+8+x+9 = 5x+35 = A+25

 

You are very welcome!

:P

 Dec 3, 2019

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