(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

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

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

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

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