Time and Work - Mock Test 9

Question 81

A man can row 6 kmph in still water. When the river is running at 1.2 kmph, it takes him 1 hour to row to a place and black. What is the total distance traveled by the man?

A) 6.24 km B) 6 km C) 5.76 km D) 5.66 km

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Question 82

A man can row 6 kmph in still water. When the river is running at 1.2 kmph, it takes him 1 hour to row to a place and black. How far is the place?

A) 3.12 km B) 2.88 km C) 3 km D) 2 km

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Question 83

A man swims downstream 72 km and upstream 45 km taking 9 hours each time; what is the speed of the current?

A) 3 kmph B) 1.5 kmph C) 13 kmph D) 6.5 kmph

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Question 84

A man swims downstream 30 km and upstream 18 km taking 3 hours each time, what is the speed of the man in still water?

A) 2 kmph B) 8 kmph C) 16 kmph D) 4 kmph

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Question 85

A boat can move upstream at 25 kmph and downstream at 35 kmph, then the speed of the current is?

A) 5 kmph B) 10 kmph C) 30 kmph D) 15 kmph

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Question 86

A man can row upstream at 25 kmph and downstream at 35 kmph, and then find the speed of the man in still water?

A) 60 kmph B) 10 kmph C) 30 kmph D) 5 kmph

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Question 87

A man can row with a speed of 15 kmph in still water. If the stream flows at 5 kmph, then the speed in downstream is?

A) 10 kmph B) 5 kmph C) 20 kmph D) 22 kmph

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Question 88

A boat goes 100 km downstream in 10 hours, and 75 m upstream in 15 hours. The speed of the stream is?

A) 7 km/h B) 5 km/h C) 3 km/h D) 2 (1/2) km/h

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Question 89

A person can swim in still water at 4 km/h. If the speed of water 2 km/h, how many hours will the man take to swim back against the current for 6km?

A) 3 B) 4 C) 4 (1/2) D) Insufficient data

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Question 90

Two pipes X and Y can separately fill a cistern in 18 and 24 hours respectively. If they are turned on alternately for one hour each, how long will it take to fill the cistern?

A) 20 hours 30 min B) 24 hours C) 18 hours 30 min D) 16 hours

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