Time and Distance [NRA CGL (National Recruitment AgencyCombined Graduate Level) Mathematics]: Questions 24  27 of 27
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Question 24
Question
MCQ▾A man goes from Surat to Mumbai at a uniform speed of 60 km/hr and comes back to Surat at a uniform speed of 40 km/hr. his average speed for the whole journey is:
Choices
Choice (4)  Response  

a.  48 km/hr  
b.  54 km/hr  
c.  55 km/hr  
d.  50 km/hr 
Passage
The table given below shows survey carried out at New Delhi Railway Station for the arrivals/departures of trains for the month of January, 2011. Study the table and answer the following questions:
Delay (in min. )  Number of arrivals  Numbers of departures 
0  1000  1220 
0  30  150  180 
30  60  40  60 
Over 60  10  40 
total  1200  1500 
Question 25 (1 of 2 Based on Passage)
Question
MCQ▾The total number of late arrivals of trains is
Choices
Choice (4)  Response  

a.  200  
b.  135  
c.  190  
d.  165 
Question 26 (2 of 2 Based on Passage)
Question
MCQ▾The percentage of number of trains arriving late at the station is
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question 27
Question
MCQ▾A man travels a distance of 30 km at 6 km/hr another distance of 30 km at 5 km/hr and a third distance of 30 km at 10 km/hr. his average speed for the whole journey (in km/hr) is
Choices
Choice (4)  Response  

a.  8  
b. 
 
c. 
 
d.  9 