NRA CGL (National Recruitment AgencyCombined Graduate Level) Mathematics: Questions 248  254 of 425
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Question number: 248
Question
In an alloy, the ratio of copper and zinc is 7: 3. If 1 kg of zinc is mixed in 20 kg of alloy, then the ratio of copper and zinc will be (Paper I)
Choices
Choice (4)  Response  

a.  2: 3  
b.  1: 2  
c.  3: 2  
d.  2: 1 
Question number: 249
Question
If 476 coins consist of rupees, 50 paise and 25 paise coins whose values are in the ratio of , the number of 50 paise coins will be (Paper I)
Choices
Choice (4)  Response  

a.  210  
b.  200  
c.  190  
d.  230 
Question number: 250
Question
By selling an article for Rs. 800, there is a loss of 20%. In order to make a profit of 10%, the selling price of the article must be (Paper  I)
Choices
Choice (4)  Response  

a.  Rs. 1400  
b.  Rs. 1100  
c.  Rs. 1500  
d.  Rs. 1300 
Question number: 251
» Fundamental Arithmetical Operations
Question
is equal to (Paper1)
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 252
» Algebra
Question
If then the simplest value of x is
Choices
Choice (4)  Response  

a. 
 
b.  1  
c. 
 
d.  2 
Question number: 253
Question
A work could be completed by certain workers in 26 days. However, due to 5 workers being absent, it was completed in 30 days. The original number of workers was (Paper  I)
Choices
Choice (4)  Response  

a.  25.8  
b.  37.9  
c.  37.5  
d.  17.6 
Question number: 254
» Algebra
Question
The present age of a father is 7 years more than seven times the age of his son. Seven years hence, father’s age will be 20 years more than twice the age of the son. The father’s present age is (Paper I)
Choices
Choice (4)  Response  

a.  29 years  
b.  45 years  
c.  37 years  
d.  35 years 