IMO Level 1 Mathematics Olympiad (SOF) Class 7: Questions 541  545 of 1012
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Question number: 541
Question
A CD stand has 36 CDs of movies. On Sunday, 21 CDs were viewed by Rani. How many CDs remain unwatched?
Choices
Choice (4)  Response  

a.  25 

b.  11 

c.  12 

d.  15 

Question number: 542
Question
The selling price of a necklace is Rs. 25800 and the loss percent is . Find the cost price of the necklace.
Choices
Choice (4)  Response  

a.  Rs. 30491 

b.  Rs. 32600 

c.  Rs. 30961 

d.  Rs. 39601 

Question number: 543
Question
Meet’s father was 31 years old when his sister was born. His mother is 3 years younger than his father. Now Meet is 25 years old and his sister is 4 years older than him. What is the present age of Meet’s mother?
Choices
Choice (4)  Response  

a.  59 years 

b.  57 years 

c.  60 years 

d.  56 years 

Question number: 544
Question
In a company, there are 45 % female employees. 40 % of all the male employees are developer. If there 58 % employees are developer out of the total 1800 employees, then the number of female employees who are developer are ________.
Choices
Choice (4)  Response  

a.  648 

b.  940 

c.  Can’t be determined 

d.  652 

Question number: 545
Question
Rohan has certain amount in his account. He gives twothird of this to his mother and one third of the remaining to his daughter. The amount left with him now is ________.
Choices
Choice (4)  Response  

a.  of the original 

b.  of the original 

c.  of the original 

d.  of the original 
