Direct and Inverse Proportions (IMO Mathematics Olympiad Class 8): Questions 54  60 of 62
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Question number: 54
» Direct and Inverse Proportions
Question
If , then the value of is________.
Choices
Choice (4)  Response  

a.  4 

b.  10 

c.  9 

d.  6 

Question number: 55
» Direct and Inverse Proportions
Question
An agent receives a commission of Rs. 25.00 on sales of Rs. 1000.00. The commission he get on sales of Rs. 100.00 is________.
Choices
Choice (4)  Response  

a.  Rs 2 

b.  Rs. 3 

c.  Rs 3.5 

d.  Rs 2.5 

Question number: 56
» Direct and Inverse Proportions
Question
Pipe A can fill an empty tank in 3 hours while pipe B can empty the full tank in 5 hours. If both are opened in the empty tank, time taken to fill it up completely is ________.
Choices
Choice (4)  Response  

a.  hours 

b.  hours 

c.  hours 

d.  hours 

Question number: 57
» Direct and Inverse Proportions
Question
The ratio which bears to is________.
Choices
Choice (4)  Response  

a.  1.04 

b.  2.63 

c.  2.00 

d.  1.00 

Question number: 58
» Direct and Inverse Proportions
Question
A can do a work in 7 days. If B is 75 % more efficient than A, then in how many days can B do the same work?
Choices
Choice (4)  Response  

a.  3 

b.  4 

c.  5 

d.  3.5 

Question number: 59
» Direct and Inverse Proportions
Question
0.5 of a number equals 0.15 of another number. The ratio of the number is________.
Choices
Choice (4)  Response  

a.  3: 10 

b.  3: 2 

c.  10: 3 

d.  2: 3 

Question number: 60
» Direct and Inverse Proportions
Question
A sum of money is sufficient to pay wages for 31 days and wages for 38 days. The same money is sufficient to pay the wages of both for ________.
Choices
Choice (4)  Response  

a.  12 days 

b.  17 days 

c.  11 days 

d.  10 days 
