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1. Find the lengths of the other two sides of a right triangle if the length of the hypotenuse is 8 inches and one of the angles is 30°.

4, 43 inches

5, 6 inches

2, 42

3, 42 inches

None of these

2. A man takes 3 hours 45 minutes to row a boat 15 km downstream of a river and 2 hours 30 minutes to cover a distance of 5 km upstream. Find the speed of the river current in km/hr.

1 km/hr

2 km/hr

3 km/hr

4 km/hr

3. How many times are the hands of a clock at right angle in a day?

22

24

44

48

4. Two vessels A and B contain milk and water mixed in the ratio 8: 5 and 5: 2 respectively. The ratio in which these two mixtures be mixed to get a new mixture containing 69 3/4 % milk is:

2 : 7

3 : 5

5 : 2

5 : 7