81. A water tank is 6 m in length 4 m in breadth and 1.5 cm in depth. Find the volume of the tank
(A) 20 m³ (B) 36 m³ (C) 3.6 m³ (D) None of these
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82. 40% is equal to
(A) 4/5 (B) 2/3 (C) 3/5 (D) 2/5
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83. The average of 3, 7, 12 and 18 is
(A) 10 (B) 9 (C) 12 (D) 40
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84. How many orange shall I have if buy 4 1/2 dozen of orange?
(A) 50 (B) 48 (C) 54 (D) 10
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85. Find the breadth of the rectangle whose perimeter is 36 cm and length is 10 cm.
(A) 9 cm (B) 8 cm (C) 10 cm (D) 26 cm
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