Question

the perimeter of a rectangle is 240 CM if the length is decreased by 10% and it breadth increased by 20% we get the same perimeter find the length and breadth of the rectangle

Answer 1

Here is your answer in the attachment
Hope it helps you

Answer 2

The perimeter of rectangle is 240 cm.
Length is decreased =10%
Let the length be 60
60×10/100 =60-6=54
Length = 54 cm
Breath is increased = 20%54cm

Let the breath be 60

60×20/100 =60+12=72 cm
length=54 cm
breath = 72 cm