#### PROBLEM 222-CUTTHEKNOTMATH

Proposed by Daniel Sitaru-Romania https://www.cut-the-knot.org/m/Algebra/InequalityInFourWeightedVariables.shtml Solution 1 by Kevin Soto Palacios-Huarmey-Peru, Solution 2 by Amit Itagi-USA, Solution 3 by proposer…

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#### PROBLEM 214-CUTTHEKNOTMATH

Proposed by Daniel Sitaru-Romania https://www.cut-the-knot.org/triangle/InequalityInTriangleHIOG.shtml Solution 1 by Kevin Soto Palacios-Huarmey-Peru, Solution 2 by Rozeta Atanasova-Skopje Published by Alexander Bogomolny-USA

#### PROBLEM 213-CUTTHEKNOTMATH

Proposed by Daniel Sitaru-Romania https://www.cut-the-knot.org/triangle/AllInclusiveInequality2.shtml Solution 1 by Soumava Chakraborty-Kolkata-India, Solution 2 by proposer, Solutions 3,4,5 by Kevin Soto Palacios-Huarmey-Peru…

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#### SOLUTION SP088-RMM AUTUMN EDITION 2017

Proposed by Nguyen Ngoc Tu-Ha Giang-Vietnam SOLUTION SP088 Solution by Kevin Soto Palacios-Huarmey-Peru

#### SOLUTION JP087-RMM AUTUMN EDITION 2017

Proposed by George Apostolopoulos-Messolonghi-Greece SOLUTION JP087 Solution 1 by Kevin Soto Palacios-Huarmey-Peru, Solution 2 by Sanong Hauerai-Nakon Pathom-Thailand, Solution 3…

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#### SOLUTION SP086-RMM AUTUMN EDITION 2017

Proposed by Daniel Sitaru-Romania SOLUTION SP086 Solution 1 by Ruanghaw Chaoka-Bankok-Thailand, Solution 2 by Geanina Tudose-Romania, Solution 3 by Kevin…

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#### SOLUTION JP082-RMM AUTUMN EDITION 2017

Proposed by Marin Chirciu-Romania SOLUTION JP082 Solution 1 by Kevin Soto Palacios-Huarmey-Peru, Solution 2 by Nguyen Minh Tri-Ho Chi Minh-Vietnam,…

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#### SOLUTION JP086-RMM AUTUMN EDITION 2017

Proposed by George Apostolopoulos-Messolonghi-Greece SOLUTION JP086 Solution 1 by Kevin Soto Palacios-Huarmey-Peru, Solution 2 by Soumava Chakraborty-Kolkata-India

#### SOLUTION JP079-RMM AUTUMN EDITION 2017

Proposed by Hung Nguyen Viet-Hanoi-Vietnam SOLUTION JP079 Solution 1 by Kevin Soto Palacios-Huarmey-Peru, Solution 2 by Nguyen Ngoc Tu-Ha Giang-Vietnam,…

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#### SOLUTION JP089-RMM AUTUMN EDITION 2017

Proposed by Nguyen Ngoc Tu-Ha Giang-Vietnam SOLUTION JP089 Solution 1 by Kevin Soto Palacios-Huarmey-Peru, Solution 2 by Richdad Phuc-Hanoi-Vietnam