Speed and Time [NRA CGL (National Recruitment AgencyCombined Graduate Level) Mathematics]: Questions 6  9 of 9
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Question number: 6
Question
MCQ▾A man can row at 5 km/hr in still water. If the velocity of current is 3 km/hr and it takes him 2 hour to row to a place and come back, how far is the place?
Choices
Choice (4)  Response  

a.  3.6 km  
b.  6.4 km  
c.  3.2 km  
d.  4.5 km 
Question number: 7
Question
MCQ▾A man can row at 8 km/hr in still water. If the velocity of current is 4 km/hr and it takes him 1 hour to row to a place and come back, how far is the place?
Choices
Choice (4)  Response  

a.  5 km  
b.  3 km  
c.  2 km  
d.  6 km 
Question number: 8
Question
MCQ▾A boat goes 30 km downstream and comes back to the starting point in 2 hours. If the speed of the current is 8 km/hr, then the speed (in km/hr) of the boat in still water is
Choices
Choice (4)  Response  

a.  38  
b.  32  
c.  36  
d.  39 
Question number: 9
Question
MCQ▾A person divides his total distance of journey into three equal and decides to travel the three parts with speeds of 5,10 and 15 km/hr. find his average speed. (In km/hr)
Choices
Choice (4)  Response  

a. 
 
b.  6.45  
c. 
 
d. 
