Time and Distance For SBI PO Set – 4

1) A motor boat went downstream for 120 km and immediately returned. It took the boat 15 hours to complete the round trip. If the speed of the river were twice as high, the trip downstream and back would take 24 hours. What is the speed of the boat in still water?

a) 20 km/h

b) 18 km/h

c) 15 km/h

d) 16 km/h

e) None of these

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2) A motor boat takes 12 hours to go downstream and it takes 24 hours to return the same distance. What is the time taken by boat in still water?

a) 15 h

b) 16 h

c) 8 h

d) 20 h

e) None of these 

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3) A man can row 15 km/h in still water and he finds that is takes him twice as much time to row up than as to down the same distance in the river. The speed of the current (in km/h) is

a) 6 km/h

b) 6.5 km/h

c) 4.5 km/h

d) 5 km/h

e) None of these 

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4) A motor boat takes 2 hours to travel a distance of 9 km downstream and it takes 6 hours to travel the same distance against the current. The speed of the boat in still water and that of the current (in km/h) respectively are:

a) 6,5

b) 3,1.5

c) 8,5

d) 9,3

e) None of these

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5) A boat  covers 48 km upstream and 72 km downstream in 12 hours, while it covers 72 km upstream and 48 km downstream in 13 hours. The speed of stream is:

a) 2 km/h

b) 2.2 km/h

c) 2.5 km/h

d) 4 km/h

e) None of these 

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6) A man can swim 5 km/h in still water . If the speed of current be 3 km/h the time taken by him to swim to a place 16 km upstream and back is:

a) 8 h

b) 7.5 h

c) 6.66 h

d) 10 h

e) None of these 

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7) A man can row upstream at 15 km/h and downstream at 21 km/h. The speed of water current of the river is:

a) 8 km/h

b) 6 km/h

c) 3 km/h

d) 5 km/h

e) None of these  

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8) A man can row downstream at 12 km/h and upstream at 8 km/h . What is the speed of man in still water?

a) 12 km/h

b) 10 km/h

c) 8 km/h

d) 9 km/h

e) None of these  

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9) The  wheel of an engine of 300 cm in circumference makes 10 revolutions in 6 seconds. What is the speed of the wheel (in km/h) ?

a) 18

b) 20

c) 27

d) 36

e) None of these  

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10) A car crosses a man walking at 5 km/h. The man can see the things upto 450 m only in direction due to fog. He sees the car which was going in the same direction for 4.5 minutes. What is the speed of the car?

a) 9 km/h

b) 11 km/h

c) 12.5 km/h

d) 15 km/h

e) None of these  

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