If the area of a rectangular plot increases by 30% while its breadth remains the same, what will be the ratio of the new area to the old area?

If the area of a rectangular plot increases by 30% while its breadth remains the same, what will be the ratio of the new area to the old area?

Explanation
  • Old area = A

  • New area = A + 30% of A = 1.3A

So, the ratio of new area : old area =

1.3AA=1.3:1=1310frac{1.3A}{A} = 1.3 : 1 = frac{13}{10}10