Everyday Mathematics (IMO Mathematics Olympiad (SOF) Class 9): Questions 77  81 of 99
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Question number: 77
» Everyday Mathematics
Question
P, Q and R enter into partnership by making investments in the ratio. After a year, R invests another Rs. 452500 while P withdrew Rs. 65400. The ratio of investments then changes to . How much did R invest initially?
Choices
Choice (4)  Response  

a.  Rs. 228900 

b.  Rs. 228990 

c.  Rs. 225899 

d.  Rs. 224516 

Question number: 78
» Everyday Mathematics
Question
Tea worth Rs. 126 per kg and Rs. 135 per kg are mixed with a third variety in the ratio. If the mixture is worth Rs. 153 per kg, the price of the third variety per kg will be
Choices
Choice (4)  Response  

a.  Rs. 169.50 

b.  Rs. 180 

c.  Rs. 170 

d.  Rs. 175.50 

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 
