International Maths Olympiad Forum By SOF Olympiad Trainer - Page 119
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Jhumur Bhattacharya Kanungo from shivprakash memorial school, dadra & nagar haveli, silvassa
Subject :IMO    Class : Class 4

Ans 1:

Vrushti from swami vivekanand english primary school, Mumbai
Class : Class 4
left side weight is 12 + 6(small ball) = 6 + 6 + 6 ( which means 12 + 6 + 6 + 6 + 6 = 36)

Ans 2:

Admin from SOF, Noida
Class : Class 10
Answer: C (36 kg)
The option C should be 36 kg and not 30 kg. Corrected the mistake.

Solution:
Let the weight of the small ball be x.
3x = 12 + x
2x = 12
x = 6
Weight of 5 balls = 12 + 6+ 6+ 6 +6 = 36kg

Ans 3:

sklogic from SSM School, Chennai
Class : Class 3
I think they are asking for the mass of all 5 balls together. The mass of small ball is 6 Kg. Hence the total mass = 12 + 6 + 6 + 6 + 6 = 36.

Ans 4:

ayush pro legend from dps haridwar, haridwar
Class : Class 5

Ans 5:

Admin from SOF, Noida
Class : Class 10
Answer: C (36 kg)
The option C should be 36 kg and not 30 kg. Corrected the mistake.

Solution:
Let the weight of the small ball be x.
3x = 12 + x
2x = 12
x = 6
Weight of 5 balls = 12 + 6+ 6+ 6 +6 = 36kg

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Nidhish from New horizon school, Kolhapur
Subject :IMO    Class : Class 4

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Kanishka Ajwani from DAV International School, Ahmedabad
Subject :IMO    Class : Class 4

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Kanishka Ajwani from DAV International School, Ahmedabad
Subject :IMO    Class : Class 4

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vibhor from S D Vidya Mandir, Panipat
Subject :ICSO    Class : Class 4

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

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MADHUPI MUKHOPADHYAY from g.d.birla centre for education, kolkata
Subject :IMO    Class : Class 4

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Pavan from Kendriya Vidalaya DRDO, Bengaluru
Subject :IMO    Class : Class 4

Ans 1:

mohanananda from delhipublicschool, Dhanbad
Class : Class 8
do the opposite calculations. 100/5=20 20+10=30 30/2=15

Ans 2:

Adwait Shiva from Udgam School For Children, Ahemdabad
Class : Class 9
fifteen/15

Ans 3:

Pavan from Kendriya Vidalaya DRDO, Bengaluru
Class : Class 8
15

Ans 4:

Anshuman Nema from Meridian Madhapur, Hyderabad
Class : Class 10
15

Ans 5:

Kanishka Ajwani from DAV International School, Ahmedabad
Class : Class 4
fifteen\15

Ans 6:

Nidhish from New horizon school, Kolhapur
Class : Class 7
15

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Aryan Sirohi from mount litera zee school, Bengaluru
Subject :IMO    Class : Class 4

Ans 1:

Kanishka Ajwani from DAV International School, Ahmedabad
Class : Class 4
144567

Ans 2:

Udayan Sindhu Chaudhuri from Bluebells School International , New Delhi
Class : Class 9
144576

Ans 3:

Udayan Sindhu Chaudhuri from Bluebells School International , New Delhi
Class : Class 9
144576

Ans 4:

Kanishka Ajwani from DAV International School, Ahmedabad
Class : Class 4
144576

Ans 5:

Aryan Sirohi from mount litera zee school, Bengaluru
Class : Class 4
1,44,576

Ans 6:

Aryan Sirohi from mount litera zee school, Bengaluru
Class : Class 4
Udayan why are you copying me.

Ans 7:

Anwesha from DAV public school , Pune
Class : Class 8
144567

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ARNAV GARG from PRUDENCE SCHOOL, New Delhi
Subject :IMO    Class : Class 4

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ISHAAN PRIYADARSHI from G D Goenka School, New Delhi
Subject :IMO    Class : Class 4

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