Question

the length of rectangle is 20 CM more than its breadth if the perimeter is 100 cm find the dimension of rectangle

Answer 1

BREADTH=X
LENGTH=X+20

NOW, FIND VALUE OF X
       PERIMETER=2(BREADTH+LENGTH)
                      100=2(X+X+20)
                       100=4X+40
                  100-40=4X
                      60/4=X
                           X=15


NOW, WE FIND BREADTH AND LENGTH
      BREADTH=X=15cm
      LENGTH=X+20=15+20=35cm