IMO Mathematics Olympiad (SOF) Class 8: Questions 872  876 of 1030
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Question number: 872
Question
Nisha walks from her house 608 meters south and from there 105 meters west to visit her aunt’s house. While coming back, she walked diagonally from her aunt’s house, back to her home. What distance did she walk while returning?
Choices
Choice (4)  Response  

a.  617 meter 

b.  600 meter 

c.  620 meter 

d.  612 meter 

Question number: 873
Question
At 3: 00 p. m. on a sunny day, a stick 3 feet tall casts a shadow 7 feet long. At the same time, a tree nearby casts a shadow 55 feet long. What is the height, in feet, of the tree?
Choices
Choice (4)  Response  

a.  12.50 feet 

b.  23.57 feet 

c.  21.22 feet 

d.  10.25 feet 

Question number: 874
Question
Out of a number of items. Shyam purchases 50 % fridges. 5 % of these are found to be defective. The percentage of defective fridge in all is________.
Choices
Choice (4)  Response  

a.  3.5% 

b.  4.2% 

c.  2.5% 

d.  5.1% 

Question number: 875
Question
The total area of a square and a rectangle is equal to 1125 sq. cm. The length of one side of square and rectangle is 25 cm. What is the sum of the perimeter of the square and rectangle?
Choices
Choice (4)  Response  

a.  178 cm 

b.  172 cm 

c.  176 cm 

d.  179 cm 

Question number: 876
Question
Mihir correctly answered 80 % of the questions in a physics test contained exactly 40 questions. How many of the questions did he answer incorrectly?
Choices
Choice (4)  Response  

a.  6 

b.  4 

c.  5 

d.  8 
