IMO Level 1 Mathematics Olympiad (SOF) Class 7: Questions 389  396 of 1022
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Question number: 389
Question
Two numbers are in the ratio of 1: 2. If 7 be added to both, their ratio changes to 3: 5. The greater number is ________.
Choices
Choice (4)  Response  

a.  32 

b.  28 

c.  25 

d.  36 

Question number: 390
Question
If then a =?
Choices
Choice (4)  Response  

a.  5 

b.  4 

c.  1 

d.  9 

Question number: 391
Question
By selling a cup for Rs. 180, a man loses of his outlay. If it is sold for Rs. 255, what is the gain percent?
Choices
Choice (4)  Response  

a.  19.45% 

b.  13.33% 

c.  13.5% 

d.  22% 

Question number: 392
Question
Two numbers are in the ratio of 2: 3. If 9 be subtracted from both, their ratio changes to 1: 2. The greater number is ________.
Choices
Choice (4)  Response  

a.  28 

b.  27 

c.  18 

d.  38 

Question number: 393
Question
A man purchased a bag of sugar containing 55 kg for Rs. 225. He sold it at the rate of Rs. 5.25 per kg. Then the profit or loss in % is ________.
Choices
Choice (4)  Response  

a.  16.67 % gain 

b.  16.67 % loss 

c.  12.56 % gain 

d.  12.56 % loss 

Question number: 394
Question
The CP of 25 articles is equal to the SP of 20 articles. The gain % is ________.
Choices
Choice (4)  Response  

a.  50% 

b.  30% 

c.  20% 

d.  25% 

Question number: 395
Question
If , then x =
Choices
Choice (4)  Response  

a.  6 

b.  9 

c.  0 

d.  15 

Question number: 396
Question
An expression is taken away from to obtain, then the expression is ________.
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 

