1. A man can row upstream at 8 kmph and downstream at 13 kmph. The speed of the stream is

2.5 km/hr

4.2 km/hr

5 km/hr

10.5 km/hr

None of these


2- If the sum of the interior angles of a regular polygon measures upto 1440 degrees, how many sides does the polygon have?

10 sides

8 sides

12 sides

9 sides

None of these


3. Number of solutions of the equation tan x + sec x = 2 cos x, lying in the interval [0, 2p] is

0

1

2

3

None of these


4. A alone can do a piece of work in 6 days and B alone 8 days. A and B undertook to do it for Rs.3200. With the help of C, they completed the work in 3 days. How much is to be paid to C?

Rs.375

Rs.400

Rs.600

Rs.800

None of these


5. A train travels at an average of 50 miles per hour for 2x1/2 hours and then travels at a speed of 70 miles per hour for 1x1/2 hours. How far the train did travels in the entire 4 hours?

120 miles

150 miles

200 miles

230 miles

None of these


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