Speed and Time [NRA CGL (National Recruitment Agency-Combined Graduate Level) Mathematics]: Questions 6 - 9 of 9

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Question number: 6

Speed and Time
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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

Speed and Time
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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

Speed and Time
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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

Speed and Time
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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.