Question

If the breadth of a rectangle is increased by 40% and length Is reduced by 30% what will be the effect on the area

Answer 1

let length and breadth = 100 each
then length after reduction = 70
and breadth after increment = 140
new area = 70 * 140 = 9800
previous area = 100 * 100 = 10000
reduction in area = 10000 - 9800 = 200
reduction % = 200 / 10000 * 100 = 2 %