IMO Mathematics Olympiad Class 7: Questions 510  515 of 965
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Question number: 510
Question
Ravi has a total of Rs. 25, 000. He spends 20 % of his money on books. How many rupees does he spend on books?
Choices
Choice (4)  Response  

a.  Rs. 5000 

b.  Rs. 4500 

c.  Rs. 5500 

d.  Rs. 1000 

Question number: 511
Question
In an office, there are 72 employees. The ratio of female to male is 3: 5. How many male are there in the office?
Choices
Choice (4)  Response  

a.  45 

b.  50 

c.  40 

d.  37 

Question number: 512
Question
Each of two groups of employees has 70 people. If of the first group are male employees and of the second group are male employees, how many more male employees of the first group than of the second group?
Choices
Choice (4)  Response  

a.  12 

b.  14 

c.  15 

d.  20 

Question number: 513
Question
There are 78 white kites and 22 less blue kites than white kites in a shop. What is the ratio of the number of blue kites to the total number of kites?
Choices
Choice (4)  Response  

a.  14: 33 

b.  27: 61 

c.  28: 67 

d.  7: 15 

Question number: 514
Question
Rohan’s mother was 24 years old when his sister was born. His father is 5 years older than his mother. Now Rohan is 19 years old and his sister is 6 years older than him. What is the present age of Rohan’s father?
Choices
Choice (4)  Response  

a.  39 years 

b.  48 years 

c.  56 years 

d.  54 years 

Question number: 515
Question
I was sitting alone in a park. After a while, there came an old man followed by an old lady. They were followed by two couples who were accomplished by a child each. What was the number of total persons present in the park?
Choices
Choice (4)  Response  

a.  9 

b.  11 

c.  8 

d.  10 
