Everyday Mathematics (IMO Mathematics Olympiad Class 9): Questions 79  84 of 99
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Question number: 79
» Everyday Mathematics
Question
If 3 is added to the denominator of a fraction, the fraction becomes 6. If 4 is added to the numerator, the fraction becomes 30, the fraction is ________.
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 80
» Everyday Mathematics
Question
In an office, the number of men is more than the number of women by 12 of the total strength. The ratio of men’s to women’s is ________
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 81
» Everyday Mathematics
Question
If a commission of is given on the marked price of a book, the publisher gains . If the commission is increased to , the gain is ________
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d.  None of the above 
Question number: 82
» Everyday Mathematics
Question
The compound interest on Rs. 100000 at per annum for 2 years 3 months, compound annually is ________
Choices
Choice (4)  Response  

a.  Rs. 100000  
b.  Rs. 251200  
c.  Rs. 151200  
d.  Rs. 51200 
Question number: 83
» Everyday Mathematics
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: 84
» Everyday Mathematics
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 