IMO Mathematics Olympiad (SOF) Class 9: Questions 839  845 of 919
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Question number: 839
Question
If 20 men working 5 hours a day for 10 days can complete a job, how many men working 10 hours a day for 5 days will be needed?
Choices
Choice (4)  Response  

a.  20 

b.  50 

c.  25 

d.  65 

Question number: 840
Question
A fan is listed at Rs. 650, with a discount of what additional discount must be offered to the customer to bring the net price to Rs. 452?
Choices
Choice (4)  Response  

a. 


b. 


c. 


d.  Question does not provide sufficient data or is vague 

Question number: 841
Question
Two dice are thrown simultaneously, the odds in favour of getting the sum 5 is________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 842
» Analytical Reasoning and Logical Reasoning
Question
B is the brother of R. J is sister of R. A is brother of B. How is R related to A?
Choices
Choice (4)  Response  

a.  Brother 

b.  Sister 

c.  Brother or Sister 

d.  None of the above 

Question number: 843
Question
If and , then value of is________.
Choices
Choice (4)  Response  

a.  770 

b.  115 

c.  227 

d.  555 

Question number: 844
Question
The median of the observation 2,1, 12,29,25,12,10,4, 5 is ________
Choices
Choice (4)  Response  

a.  12 

b.  25 

c.  15 

d.  10 

Question number: 845
Question
A man purchased two clocks P and Q at a total cost Rs. 800. He sells P at profit and Q at a loss of and gets the same selling price for both the clocks. What are the purchasing prices of P and Q respectively?
Choices
Choice (4)  Response  

a.  Rs. 275, Rs. 425 

b.  Rs. 266.67, Rs. 533.33 

c.  Rs. 250.65, Rs. 200.22 

d.  Rs. 360, Rs. 850 
