The perimeter of a rectangle and a square are both 160m, but the area of the rectangle is less than the area of the square by 100 sq.m. Find the length and breadth of the rectangle.
a) Length = 30m, Breadth = 50m
b) Length = 40m, Breadth = 60m
c) Length = 50m, Breadth = 70m
d) Length = 60m, Breadth = 80m