IMO Mathematics Olympiad (SOF) Class 7: Questions 509  513 of 1012
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Question number: 509
Question
Ram and his mom were baking cupcakes. The recipe calls for one egg for every dozen cupcakes. Ram finds five eggs in his refrigerator and makes a chart to see how many cupcakes he can make.
Eggs  1  2  3  4  5 
Cupcakes  12  24  36  48   
What is the missing value in the chart?
Choices
Choice (4)  Response  

a.  17 

b.  60 

c.  72 

d.  49 

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 
