Aptitude Test - 3

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1) A man's speed with the current is 15 km/hr and the speed of the current is 2.5 km/hr. The man's speed against the current is:

• 8.5 km/hr
• 9 km/hr
• 10 km/hr
• 12.5 km/hr

2) A motorboat, whose speed in 15 km/hr in still water goes 30 km downstream and comes back in a total of 4 hours 30 minutes. The speed of the stream (in km/hr) is:

• 4
• 5
• 6
• 10

3) Speed of a boat in standing water is 9 kmph and the speed of the stream is 1.5 kmph. A man rows to a place at a distance of 105 km and comes back to the starting point. The total time taken by him is:

• 16 hours
• 18 hours
• 20 hours
• 24 hours

4) A man rows to a place 48 km distant and come back in 14 hours. He finds that he can row 4 km with the stream in the same time as 3 km against the stream. The rate of the stream is:

• 1 km/hr
• 1.5 km/hr
• 2 km/hr
• 2.5 km/hr

5) The speed of a boat in still water in 15 km/hr and the rate of current is 3 km/hr. The distance travelled downstream in 12 minutes is:

• 1.2 km
• 1.8 km
• 2.4 km
• 3.6 km

6) A man can row at 5 kmph in still water. If the velocity of current is 1 kmph and it takes him 1 hour to row to a place and come back, how far is the place?

• 2.4 km
• 2.5 km
• 3 km
• 3.6 km

7) A boat covers a certain distance downstream in 1 hour, while it comes back in 1 and half an hours. If the speed of the stream be 3 kmph, what is the speed of the boat in still water?

• 13 kmph
• 14 kmph
• 15 kmph
• None of these