A tank is 25 m long, 12 m wide and 6 m deep. The cost of plastering its walls and bottom at 75 paise per sq., is:

A tank is 25 m long, 12 m wide and 6 m deep. The cost of plastering its walls and bottom at 75 paise per sq., is:

  • (A) Rs. 456
  • (B) Rs. 458
  • (C) Rs. 558
  • (D) Rs. 568
  • Solution: The area of the bottom part = 25 ×12 = 300 m².
  • For the walls: 2 × 25 x 6 + 2 × 12 x 6 = 300 + 144 = 444 m².
  • The total area = 300 + 444 = 744 m².
  • The cost = 744 × 0.75 = 558.
  • Answer: (C) Rs. 558
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Related MCQs:

 ‘NATO’ is an abbreviation of:

  • (A) North Atlantic Treaty Organization
  • (B) Non-Aligned Treaty Organization
  • (C) Non-Aligned Trading Organization
  • (D) North American Transport Organization

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