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871

Q:

The length, breadth and height of a room are in the ratio 7:3:1. If the breadth and height are doubled while the length is halved, then by what percent the total area of the 4 walls of the room will be increased?

  • 1
    85%
  • 2
    90%
  • 3
    75%
  • 4
    80%
  • 5
    Cannot be determined
  • Show Answer
  • Workspace

Answer : 2. "90% "

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