Answer :

Perimeter of the given rectangle = 240 cm

Let the length of the rectangle = x cm


Let the breadth of the rectangle = y cm


According to the question


2(x + y) = 240


x + y = 240(i)


(divide by 2 on both the sides)


Let the new length be




Let the new breath be




According to the question




(divide by 2 on both the sides)


From





(take L.C.M on both side and solve)


x = 2y


(multiply by 10 on both the sides and solve)


x-2y = 0(iii)


subtracting (iii)from (i)


x-2y-x-y = -120


-3y = -120


y = 40


Put the value of y in (i)


x + y = 120


x = 120-40


x = 80


The breath = 40 cm


The length = 80 cm


Hence, length of the 2nd rectangle


Breath of the 2nd rectangle


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