International Maths Olympiad Forum By SOF Olympiad Trainer - Page 178
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Yusra Siddiqui from dpsnoida, Noida
Subject :IMO    Class : Class 4

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Krishiv Rajesh Malan from Atul Vidyalaya, Valsad
Subject :IMO    Class : Class 3

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Atharva Deshpande from KV AFS BEGUMPET, Secunderabad
Subject :IMO    Class : Class 7

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Sahana from dpsnoida, Noida
Subject :IMO    Class : Class 3

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Tejveer Singh from Jodhamal Public School, Jammu
Subject :IMO    Class : Class 6

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Avyukth Manoj from Chirec, Hyderabad
Subject :IMO    Class : Class 8

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Devang Sharma from Modern school, Kota
Subject :IMO    Class : Class 8

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anishkulkarni from City International School Kothrud, Pune
Subject :IMO    Class : Class 7

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Ayan Vohra from Bhavan Vidyalaya , Chandigarh, chandigarh
Class : Class 8
wow anishkulkarni it is not like there is NEGATIVE sign in front of those numbers huh!

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anishkulkarni from City International School Kothrud, Pune
Class : Class 7
a IS THE ONE

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Vidhi from Gita Niketan Awasiya Vidyalaya , Kurukshetra
Subject :IMO    Class : Class 8

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Tanmayi kiran giri from airforce force public school Vayusena Nagar, Nagpur, nagpur
Subject :IMO    Class : Class 9

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SHRIYA NARENDRA from INDIAN SCHOOL AL GHUBRA, MUSCAT
Class : Class 9
The answer is option C. 3y+5y+y=180. 9y=180 y=180/90 y=20 Hence, option C is correct.

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