International Maths Olympiad Forum By SOF Olympiad Trainer - Page 750
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Adiammu from RGS, USA
Subject :IMO    Class : Class 7

Ans 1:

Rishit Sharma from Nehru World School, Ghaziabad
Class : Class 7

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Sushil Kumar from dpsnoida, Noida
Subject :IMO    Class : Class 6

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
The correct answer is A.

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Jhumur Bhattacharya Kanungo from shivprakash memorial school, dadra & nagar haveli, silvassa
Subject :IMO    Class : Class 4

Ans 1:

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 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:

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 4:

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 5:

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

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Meowness from Why should I tell?, Wow
Subject :IMO    Class : Class 5

Ans 1:

Priyal Gulati from ,
Class : Class 7
I don't think this answer is correct.

Ans 2:

Priyal Gulati from ,
Class : Class 7
The should be a division sign.

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Ayush Banerjee from DAV Pune, Pune
Subject :IMO    Class : Class 3

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
The correct answer is B.

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Ayush Banerjee from DAV Pune, Pune
Subject :IMO    Class : Class 3

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
The correct answer is D.

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Ayush Banerjee from DAV Pune, Pune
Subject :IMO    Class : Class 3

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
The correct answer is B.

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anmol from pallavi model school,boduppal, Hyderabad
Subject :IMO    Class : Class 7

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HIMANISH BASU from APS BANGALORE , Bangalore
Subject :IMO    Class : Class 3

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Anidroid ,Aniruddha from Modern DPS, Faridabad
Subject :IMO    Class : Class 8

Ans 1:

Anidroid ,Aniruddha from Modern DPS, Faridabad
Class : Class 8
I guess the questions are jumbled.I am asking about the question in which a fence is to be put.

Ans 2:

ARUNAV from DPS VINDHYANAGAR, VINDHYANAGAR
Class : Class 10
No the correct answer is 45 And solution is Let the No. be X then multiply it by 308 that is 308X multiply it by 0.10 that is 30.8X Divide it by 3 that is 10.26X So 10.26X(Approx)=462 X =462/10.26 X =45.02 X =45(approx)

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