6. The area of an equilateral triangle of side ‘a’ units is :
(1) sq. units (2) sq. units (3) sq. units (4) sq. units (5) sq. units
7. For a certain article, if the discount is 20%, the profit is 20%. What is the profit if the discount is 10%?
(1) 10% (2) 26% (3) 30% (4) 35% (5) 40%
8. The ratio of the amounts that two friends A and B have is 3 : 2 . If, however, A pays B Rs.10, the ratio is reversed. How many rupees does A have?
(1) 20 (2) 25 (3) 30 (4) 50 (5) Insufficient data
9. Cows are tethered, one to each corner of a square, by means of equal length of ropes, so that each can graze over the greatest possible area without encroaching on the territory of another. What is the area of the region over which none of the cows can graze if each side of the square is 14 units long?
(1) 20 sq.units (2) 44 sq. units (3) 42 sq.units (4) 12 sq.units (5) Insufficient data
10. A number is first decreased by 10% and then increased by 10%. The number so obtained is 50 less than the original number. The original number is:
(1) 5900 (2) 5000 (3) 5500 (4) 5050 (5) None of these
Answers:
6. (4)
7. (4)
8. (4)
9. (3)
10. (2)
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