Mixtures & Allegations [NRA CGL (National Recruitment AgencyCombined Graduate Level) Mathematics]: Questions 1  5 of 8
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Question number: 1
» Mixtures & Allegations
Question
10 kg of urad dal costing Rs. 55 per kg is mixed with 15 kg of urad dal costing Rs. 50 per kg. The average price per kg of mixed urad dal is
Choices
Choice (4)  Response  

a.  Rs. 70  
b.  Rs. 95  
c.  Rs. 52  
d.  Rs. 75 
Question number: 2
» Mixtures & Allegations
Question
15 kg of beans costing Rs. 80 per kg is mixed with 5 kg of beans costing Rs. 60 per kg. the average price per kg of mixed beans is
Choices
Choice (4)  Response  

a.  Rs. 68  
b.  Rs. 95  
c.  Rs. 57  
d.  Rs. 75 
Question number: 3
» Mixtures & Allegations
Question
A and B are two alloys of gold and copper prepared by mixing metals in the ratios 2: 7 and 7: 11 respectively. Equal quantities of these alloys are melted to form a third alloy C. the ratio of gold and copper in the alloy C is (Paper I)
Choices
Choice (4)  Response  

a.  15: 17  
b.  11: 25  
c.  25: 33  
d.  33: 25 
Question number: 4
» Mixtures & Allegations
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: 5
» Mixtures & Allegations
Question
A and B are two alloys of gold and copper prepared by mixing metals in the ratios 3: 7 and 7: 13 respectively. Equal quantities of these alloys are melted to form a third alloy C. the ratio of gold and copper in the alloy C is (Paper I)
Choices
Choice (4)  Response  

a.  27: 13  
b.  23: 18  
c.  18: 23  
d. 
