Question

Tthe perimeter of a rectangle is 240 cm if the length is decreased by 10% and bteadth is increased by 20 % we get same perimeter. Find tje length and breadth of rectangle

Answer 1

2 (I + b) = 24o, l+b=120

(90|/ 100+ 120b/100) 2=240

simplifying->3I +4b=400

solving->I=80, b = 40