IMO Mathematics Olympiad (SOF) Class 9: Questions 804  809 of 919
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Question number: 804
Question
Coffee worth Rs. 140 per kg and Rs. 160 per kg are mixed with a third variety in the ratio. If the mixture is worth Rs. 180 per kg, the price of the third variety per kg will be
Choices
Choice (4)  Response  

a.  Rs. 220 

b.  Rs. 240 

c.  Rs. 230 

d.  Rs. 210 

Question number: 805
Question
A rectangular park 60 m long and 40 m wide has concreate crossroads running in the middle of the park and rest of the park has been used as a lawn. If the area of the lawn is 2109 sq. m, then what is the width of the road?
Choices
Choice (4)  Response  

a.  6 m 

b.  3 m 

c.  4 m 

d.  5 m 

Question number: 806
» Analytical Reasoning and Logical Reasoning
Question
Which number will replace the question mark?
Choices
Choice (4)  Response  

a.  30 

b.  26 

c.  22 

d.  24 

Question number: 807
Question
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 808
Question
The average of 9 numbers is 8. What should be added as 10^{th} number to make the average 9?
Choices
Choice (4)  Response  

a.  10 

b.  72 

c.  90 

d.  18 

Question number: 809
» Introduction to Euclid's Geometry
Question
Two distinct ________ in a plane cannot have more than one point in common
Choices
Choice (4)  Response  

a.  Lines and points 

b.  Lines 

c.  Points 

d.  Question does not provide sufficient data or is vague 
