IMO Level 1 Mathematics Olympiad (SOF) Class 9: Questions 849  855 of 929
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Question number: 849
Question
A man purchased two clocks A and B at a total cost Rs. 650. He sells A at profit and B at a loss of and gets the same selling price for both the clocks. What are the purchasing prices of A and B respectively?
Choices
Choice (4)  Response  

a.  Rs. 275, Rs. 375  
b.  Rs. 300, Rs. 350  
c.  Rs. 250, Rs. 400  
d.  Rs. 225, Rs. 425 
Question number: 850
Question
The sum of the xcoordinates of the intersection of and , is ________.
Choices
Choice (4)  Response  

a. 
 
b.  0  
c. 
 
d. 

Question number: 851
Question
Average of 10 numbers is 12. What should be added as 11^{th} number to make the average 13?
Choices
Choice (4)  Response  

a.  28  
b.  23  
c.  30  
d.  25 
Question number: 852
» Analytical Reasoning and Logical Reasoning
Question
Mathematics is related to numbers in the same way as history is related to ________
Choices
Choice (4)  Response  

a.  Dates  
b.  Events  
c.  Wars  
d.  People 
Question number: 853
Question
Age of Smith’s father is 4 times of his age. If 5 years ago, father’s age was 7 times of the age of his son at that time. What is Smith’s father present age?
Choices
Choice (4)  Response  

a.  40 years  
b.  60 years  
c.  45 years  
d.  51 years 
Question number: 854
Question
If , then , is ________.
Choices
Choice (4)  Response  

a.  2  
b.  3  
c.  0  
d.  1 
Question number: 855
Question
A and B invest in a business in the ratio . If of the total profit goes to charity and A’s share is Rs. 855, the total profit is ________
Choices
Choice (4)  Response  

a.  Rs. 1500  
b.  Rs. 1537.50  
c.  Rs. 1425  
d.  Rs. 1576 