International Maths Olympiad Forum By SOF Olympiad Trainer - Page 422
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yagvalakya from B V B Vidyashram pratap nagar, JAIPUR
Subject :IMO    Class : Class 8

Ans 1:

Shreyas U M from Surabhi , Hospet
Class : Class 9
c.p of each apple = 34/8 = 4.25 s.p of each apple = 57/12 = 4.75 profit per apple = 4.75-4.25 = 0.5 net profit = no of apple sold * profit on each apple 45 = no of apple sold *0.5 45/0.5 = 45*2 = 90 = no of apple sold thus the answer is (A) 90 apples

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Juhi Ghosh from Mahadevi Birla Shishu Vihar kolkata, Kolkata
Subject :IMO    Class : Class 6

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Vinay Hariharan from Podar International School, Pune
Subject :IMO    Class : Class 8

Ans 1:

Sriyansh from Surabhi , Hosapete
Class : Class 9
Let the measure of the breadth =10 Let the measure of the length = 10 original area=10 x 10 =100 new length=9.5 new breadth=10.5 new area = (100-5)(100+5)/100 new area=99.75 percent change=100-99.75 =(0,25/100) x 100=0.25% decrease

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lavansh Agarwal from jodhamal public school, Jammu
Subject :IMO    Class : Class 4

Ans 1:

sonali surana from VIBHGYOR, Mumbai
Class : Class 1

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devdutta majhi from katwa d.d.c girls h.s school, katwa
Subject :IMO    Class : Class 6

Ans 1:

Garv Agarwal from Somerville School Noida, Noida
Class : Class 3
yes, the ans is 10 2/5 only....

Ans 2:

Sradha Ratheesh from MGM central Public School, Trivandrum
Class : Class 8

Ans 3:

Urvi from Gear Innovative International School, Bangalore
Class : Class 6
Looks like the solution is updated, which is correct = 10 1/2 but there is no such option.

Ans 4:

Urvi from Gear Innovative International School, Bangalore
Class : Class 6

Ans 5:

Naitik Mundra from International School Rheintal, Buchs Sankt Gallen
Class : Class 9
answer should be 10 2/5

Ans 6:

harry potter from hogwarts, hogsmeade
Class : Class 6

Ans 7:

Aaditya Jain from Jaypee public school, Greater noida
Class : Class 8
As the answer will be like this(-3/5 -(-2 3/5)) * 5 1/5= 2*5 1/5/ = 10 2/5

Ans 8:

AREEN from BOLTON, HYDERABAD
Class : Class 6
True. Options are wrong...... :-(

Ans 9:

Aaditya Jain from Jaypee public school, Greater noida
Class : Class 8
Yes the answer is 10.4 or10 2/5

Ans 10:

Aarav Srivastav from DWPS , Noida Extension
Class : Class 7
Yes, but the options are wrong

Ans 11:

Vedant Ranka from Jbcn, Mumbai
Class : Class 6
wrong options

Ans 12:

Sanay Pathak from Hooghly, Hooghly
Class : Class 5
I agree to the solution given by SOF Olympiad Trainer but the options are wrong.

Ans 13:

Evangeli Saha from Calcutta International School, Kolkata
Class : Class 6
how did you get this answer

Ans 14:

Avika Goel from Delhi Public School, Navi Mumbai
Class : Class 6
Mistake in solutions - c) should be 10 2/5 instead of 20 4/5

Ans 15:

mithran from hiranandani foundation school powai, mumbai
Class : Class 5
what is the correct answer?

Ans 16:

anveshi srimal from cathedral and john connon school, mumbai
Class : Class 7
yes what is the solution to this question?

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ARJUN SHARMA from sunvalley international school, Delhi
Subject :IMO    Class : Class 5

Ans 1:

Biju Pappachan from Rkc , Raipur
Class : Class 1
Yes,Anurag Mohanty it is B. Have u got it correct? 😁

Ans 2:

ANURAG MOHANTY from DAV Public School Burla, SAMBALPUR
Class : Class 9

Ans 3:

Biju Pappachan from Rkc , Raipur
Class : Class 1
Why can’t it be A?

Ans 4:

Mihika Hivarekar from Global Indian International School, Pune
Class : Class 6

Ans 5:

VAIBHAV CHAUDHARY from DPS gwalior, gwalior
Class : Class 6
b

Ans 6:

Vindhya sawhney from Sanskriti , Gurgaon
Class : Class 5

Ans 7:

ADITYA BIKRAM PARIDA from DAV PUBLIC SCHOOL, CUTTACK
Class : Class 7
it's b

Ans 8:

Aanshi from Vibgyor High, Vadodra
Class : Class 8
It will be A

Ans 9:

ANURAG MOHANTY from DAV Public School Burla, SAMBALPUR
Class : Class 9
it's B bro

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Devika Modi from Ahlcon International School, Delhi
Subject :IMO    Class : Class 6

Ans 1:

Ridhima Padgaonkar from NEW HORIZON SCHOLARS SCHOOL, Mumbai
Class : Class 6
C

Ans 2:

ARSHIA AGARWAL from Lotus valley Noida, NOIDA
Class : Class 7

Ans 3:

Ridhima Padgaonkar from NEW HORIZON SCHOLARS SCHOOL, Mumbai
Class : Class 6

Ans 4:

Nila Pillai from Chennai public School, Chennai
Class : Class 6

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Venneti Bhargav from gyan bharati, New Delhi
Subject :IMO    Class : Class 7

Ans 1:

K SREEKAR from SEVEN SQUARE ACADEMY, MUMBAI
Class : Class 7
d

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Venneti Bhargav from gyan bharati, New Delhi
Subject :IMO    Class : Class 7

Ans 1:

Ashwin Shridhar from Vidyashilp Academy, Bangalore
Class : Class 9
option a is correct. if you modify the diagram then yes d is correct.

Ans 2:

Vidhi More from The Green Acres Academy , Mumbai
Class : Class 8
U should hv mentioned the triangle as equilateral.

Ans 3:

Venneti Bhargav from gyan bharati, New Delhi
Class : Class 7

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Venneti Bhargav from gyan bharati, New Delhi
Subject :IMO    Class : Class 7

Ans 1:

ritik from heritage, jammu
Class : Class 8
area of rectangle = l*b = 15*21 = 315 sq m area of semi - circle = 1/2 * 22/7*r^2 =1/2* 22/7* 10.5^2=173.25 sq m area of shaded region = area of rectangle - area of circle = 315 - 173.25 = 141.75 sq m

Ans 2:

Akshat Ghosh from HXLS, Gurgaon
Class : Class 5

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