IMO Level 1 Mathematics Olympiad (SOF) Class 8: Questions 490  496 of 1040
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Question number: 490
Question
The volume of a cube is 729 , its surface area is________.
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 491
Question
A metal sheet 125 cm long, 64 cm broad and 27 cm thick is melted into a cube. The difference between surface areas of two solids is________.
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 492
» Direct and Inverse Proportions
Question
can do a piece of work in 15 days and can do alone it in 10 days. B works at it for 6 days and then leaves. alone can finish the remaining work in________.
Choices
Choice (4)  Response  

a.  7.5 days  
b.  5 days  
c.  6 days  
d.  6.5 days 
Question number: 493
Question
Which of the following values are equal?
(1) (2) (3) (4)
Choices
Choice (4)  Response  

a.  2 and 3  
b.  1 and 2  
c.  1 and 4  
d.  1 and 3 
Question number: 494
» Direct and Inverse Proportions
Question
If , then the value of is________.
Choices
Choice (4)  Response  

a.  5  
b.  6  
c.  9  
d.  10 
Question number: 495
» Direct and Inverse Proportions
Question
A shopkeeper has just enough money to buy 45 cycles worth Rs. 600.00 each. If each cycle were to cost Rs. 15.00 more, then number of cycles, he will be able to buy with that amount of money, is________.
Choices
Choice (4)  Response  

a.  42  
b.  40  
c.  35  
d.  43 
Question number: 496
Question
The value of when is________.
Choices
Choice (4)  Response  

a.  24  
b.  25  
c.  21  
d.  20 