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Today's Problem


Solve one problem each day

Wednesday, 20 january 2016

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Proposed by catanedelcuOffline
(29 comments)2.369 times displayed

 Intr-o camera se afla niste persoane.  In momentul in care Ana intra in camera,  varsta medie a persoanelor din camera creste cu 4 ani.  Imediat dupa Ana intra si Maria si  varsta medie creste  cu inca 3 ani . Ana si Maria sunt gemene. 

Cate persoane erau in camera inainte sa intre Ana si Maria  ?


Tags: calculations
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