International Maths Olympiad Forum By SOF Olympiad Trainer - Page 378
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Aditya Chand from Hiranandani foundation school , powai, Mumbai
Subject :IMO    Class : Class 6

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

(B):  Cost of 1 kg rice = ₹ 15
Cost of 10 kg rice = ₹ (15 × 10) = ₹ 150
Cost of 1 kg sugar = ₹ 20
Cost of 15.04 kg sugar = ₹ (20 × 15.04)
= ₹ 300.80
Cost of 1 kg salt = ₹ 9
Cost of 5.06 kg salt = ₹ (9 × 5.06) = ₹ 45.54
Total cost = ₹ (150 + 300.80 + 45.54) = ₹ 496.34
Amount of money Chinmay gave to shopkeeper
= ₹ 1000
∴ Amount of money he get back
= ₹ (1000 - 496.34) = ₹ 503.66


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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

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

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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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