Multiple choice

What is the cost of flooring a rectangular room? Statement I: The ratio of length and breadth of the room is 5:4. Statement II: The length of the room is 50 meters and the cost of flooring is Rs.1000 per square meter. Statement III: The perimeter of the room is 180 meters and the cost of flooring is Rs.1000 per square meter.

  1. Only I and II

  2. Only II and III

  3. Any two of the three

  4. Only I and III

  5. I and either II or III
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

To find flooring cost, we need area and rate. Rate Rs.1000/sqm is in both II and III. Using I+II: length 50m, ratio 5:4 gives breadth 40m, area 2000 sqm. Using I+III: perimeter 180m with 5:4 ratio gives length 50m, breadth 40m, area 2000 sqm. Using II+III: length 50m with perimeter 180m gives breadth 40m. All pairs yield cost = 2000 × 1000 = Rs.20,00,000.

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