(Q. 1 - 5) Solve the following questions -

1) 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:

A. 16 hours    
B. 18 hours
C. 20 hours    
D. 24 hours
E. None of these

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2) A cistern of capacity 8000 litres measures externally 3.3 m by 2.6 m by 1.1 m and its walls are 5 cm thick. The thickness of the bottom is:

A. 90 cm    
B. 1 dm
C. 1 m    
D. 1.1 cm
E. None of these

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3) Gauri went to the stationers and bought things worth Rs. 25, out of which 30 paise went on sales tax on taxable purchases. If the tax rate was 6%, then what was the cost of the tax free items?

A. Rs. 15    
B. Rs. 15.70
C. Rs. 19.70    
D. Rs. 20
E. None of these

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4) A bag contains 4 white, 5 red and 6 blue balls. Three balls are drawn at random from the bag. The probability that all of them are red, is:

A. 1/22    
B. 3/22
C. 2/91
D. 2/77
E. None of these

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5) In a flight of 600 km, an aircraft was slowed down due to bad weather. Its average speed for the trip was reduced by 200 km/hr and the time of flight increased by 30 minutes. The duration of the flight is:

A. 1 hour    
B. 2 hours
C. 3 hours    
D. 4 hours
E. None of these

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