NRA CGL (National Recruitment AgencyCombined Graduate Level) Mathematics: Questions 190  196 of 425
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Question number: 190
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: 191
» Fundamental Arithmetical Operations
Question
The difference of and is (Paper1)
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 192
Question
Three numbers A, B and C are in the ratio . Their average is 800. If A is increased by and B is decreased by , then to get the average increased by , C will be increased by (Paper  I)
Choices
Choice (4)  Response  

a.  200  
b.  280  
c.  250  
d.  190 
Question number: 193
Question
26,52,78, ________.
Find the missing number in given series.
Choices
Choice (4)  Response  

a.  96  
b.  21  
c.  69  
d.  104 
Question number: 194
» Algebra
Question
The present age of a father is 2 years more than three times the age of his son. two years hence, father’s age will be 10 years more than twice the age of the son. The father’s present age is (Paper I)
Choices
Choice (4)  Response  

a.  34 years  
b.  22 years  
c.  32 years  
d.  23 years 
Question number: 195
Question
P and Q together can do a piece of work in 10 days, Q and R in 12 days, and P and R in 15 days. The number of days all of them working together take to complete the work is (Paper  I)
Choices
Choice (4)  Response  

a.  1  
b.  2  
c.  7  
d.  8 
Question number: 196
Question
A ladder 30 m long is placed in street so as to reach a window 24 m high. On turning the ladder on the other side of the street, it reaches a point 18 m high. The width of the street is (Paper  I)
Choices
Choice (4)  Response  

a.  14 m  
b.  28 m  
c.  45 m  
d.  32 m 