A shop sells floor tiles at Rs 48 per square meter. A building contractor employs a machine that polishes the tiles that damages 10% of the total number of tiles which cannot be used any more. Calculate the amount that needs to be paid by contractor to tile shop owner, if the hall is of a square shape and has a perimeter of 400 meters?

a) Rs 4,00,000 b) Rs 5,00,000 c) Rs 5,28,000 d) Rs 3,65,000

• ans:
  4 sides of a square then 400/4=100
  area of the hall 100*100=10000
  10% damaged so 10000*110/100=11000
  48 per square meter then 48*11000=528000
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