IMO Mathematics Olympiad (SOF) Class 8: Questions 790  794 of 1030
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Question number: 790
Question
Kishan bought some packages of pens. He bought one package containing 3 pens and n packages containing 5 pens each. Which one of the following expression could be used to find the total number of pens that Kishan bought?
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 791
Question
A painter leans a 15 foot ladder against the side of a house. The top of the ladder touches the house at a height that is 3 feet more than the distance from the house to the bottom of the ladder. How far is the bottom of the ladder from the house?
Choices
Choice (4)  Response  

a.  3 foot 

b.  7 foot 

c.  9 foot 

d.  None of the above 

Question number: 792
Question
The total area of a circle and a rectangle is equal to 1166 sq. cm. The diameter of the circle is 28 cm. What is the sum of the circumference of the circle and the perimeter of the rectangle if the length of the rectangle is 25 cm?
Choices
Choice (4)  Response  

a.  188 cm 

b.  189 cm 

c.  186 cm 

d.  182 cm 

Question number: 793
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.  23.57 feet 

b.  21.22 feet 

c.  10.25 feet 

d.  12.50 feet 

Question number: 794
Question
Mohan gets 3 marks for each correct answer and loses 2 marks for each wrong answer. He attempts 30 problems and obtains 40 marks. The number of problem solved correctly is________.
Choices
Choice (4)  Response  

a.  25 

b.  20 

c.  18 

d.  21 
