IMO Level 1 Mathematics Olympiad (SOF) Class 7: Questions 382  388 of 1022
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Question number: 382
Question
When a number is reduced by 4, it becomes 80 % of itself. Find the number.
Choices
Choice (4)  Response  

a.  20 

b.  50 

c.  40 

d.  30 

Question number: 383
Question
A man purchased a bag of tea containing 30 kg for Rs. 345. He sold it at the rate of Rs. 13.75 per kg. Then the profit or loss in % is ________.
Choices
Choice (4)  Response  

a.  19.57 % loss 

b.  21.13 % gain 

c.  19.57 % gain 

d.  21.13 % loss 

Question number: 384
Question
Addition of is________.
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 385
Question
By what number should be divided so that the quotient is ?
Choices
Choice (4)  Response  

a.  3 

b. 


c. 


d.  2 

Question number: 386
Question
If , then will be ________.
Choices
Choice (4)  Response  

a.  0.125 

b.  0.0625 

c.  0.25 

d.  1 

Question number: 387
Question
An object is dropped from a small plane flying at a height of 800 cm above the ground. As the object falls, d, its distance above the ground after t seconds is given by the formula below
How far above the ground is the object, when it has fallen for 3 seconds?
Choices
Choice (4)  Response  

a.  345 cm 

b.  656 cm 

c.  575 cm 

d.  455 cm 

Question number: 388
Question
By what number should be divided so that the quotient is ?
Choices
Choice (4)  Response  

a. 


b.  10 

c. 


d.  6 
