International Maths Olympiad Forum By SOF Olympiad Trainer - Page 330
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Myra Chandwani from Marble Arch School , Mumbai
Subject :IMO    Class : Class 4

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

(C):

1 kg = 1000g
Cost of 1 kg i.e 1000g oranges = Rs 120
Cost of 250g oranges = (120 / 1000) x 250 = Rs 30
Cost of 1kg  i.e 1000g apples = Rs 150
Cost of 500g apples = (150 / 1000) x 500 = Rs 75
Cost of 250g  oranges and 500g apples altogether = 30 + 75 = Rs 105


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Hamsavarshini Swaminathan from St Anns Senior Secondary School, Roorkee
Subject :IMO    Class : Class 7

Ans 1:

Hamsavarshini Swaminathan from St Anns Senior Secondary School, Roorkee
Class : Class 10
Please

Ans 2:

Rithvik from BVM Global, Chennai
Class : Class 8

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Arnav Basu from faps, Bengaluru
Subject :IMO    Class : Class 2

Ans 1:

Arnav Basu from faps, Bengaluru
Class : Class 6

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Sagnik Das from Gorabazar Iswar Chandra Institution, Berhampore
Subject :IMO    Class : Class 9

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Devesh Kumar Shrivastava from Ramjas School, Pusa Road, New Delhi
Subject :IMO    Class : Class 5

Ans 1:

Aashita from Deens Academy, Bangalore
Class : Class 5
The answer is 86.1 litres

Ans 2:

Sharanyaa Tripathi from Uttam school for girls, Ghaziabad
Class : Class 8
very very easyAdd all

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Sai Nanesh Prabhu from Don bosco highschool Oros, Sindhudurg
Subject :IMO    Class : Class 7

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

(C)

She will be facing North West after turning 45° anticlockwise. After turning 135° clockwise she will be facing East. 
Finally after turning 90° clockwise she will be facing South.


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Kushal from Chirec, Hyderabad
Subject :IMO    Class : Class 7

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

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Kushal from Chirec, Hyderabad
Subject :IMO    Class : Class 7

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

(D)

Number of fruits liked by A = 9, B =8, G = 8, M =10 and O = 7.
Answer-(D) B and G are liked by an equal number of students.


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Kushal from Chirec, Hyderabad
Subject :IMO    Class : Class 7

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

Step -4 Multiply both side by 4 is incorrect. It should be divide both sides by 4.
Answer-(B) Step - 4


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Ved Nandan Prasad from Hiranandani Foundation School, Mumbai
Subject :IMO    Class : Class 7

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

(A)

Cost of 12kg of coffee she sold = 12 x 56 = Rs. 672
Cost of 18kg of coffee she sold = 18 x 46 = Rs. 828
Average selling price 
 

=  Rs 50


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