IMO Mathematics Olympiad Class 8: Questions 524  531 of 1029
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Question number: 524
Question
The standard form of 12650000 is________.
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 525
» Direct and Inverse Proportions
Question
If and, then the value of is ________.
Choices
Choice (4)  Response  

a.  8 

b.  6 

c.  9 

d.  10 

Question number: 526
» Direct and Inverse Proportions
Question
The weight of a 12 m long iron rod is 20.5 kg. The weight of 5 m long of such rod will be________.
Choices
Choice (4)  Response  

a.  8 kg 

b.  9 kg 

c.  8.54 kg 

d.  9.5 kg 

Question number: 527
» Direct and Inverse Proportions
Question
The weight of a 15 m long iron rod is 25 kg. The weight of 10 m long of such rod will be________.
Choices
Choice (4)  Response  

a.  18 kg 

b.  16 kg 

c.  16.6 kg 

d.  18.54 kg 

Question number: 528
» Direct and Inverse Proportions
Question
A can do a work in 8 days. If B is 60 % more efficient than A, then in how many days can B do the same work?
Choices
Choice (4)  Response  

a.  3.5 

b.  3 

c.  5 

d.  4 

Question number: 529
Question
The value of is________.
Choices
Choice (4)  Response  

a. 


b.  49 

c. 


d. 


Question number: 530
Question
If and, then is equal to________.
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 531
» Direct and Inverse Proportions
Question
A man completes of a job in 10 days. At this rate how many more days will it take him to finish the job?
Choices
Choice (4)  Response  

a.  6 

b.  7.5 

c.  6.5 

d.  7 
