In the figure given below, a rectangle of perimeter 76 units is divided into 7 congruent rectangles.
What is the perimeter of each of the smaller rectangles?
28
Let sides of rectangle are x & y
Then
5x + 6y = 76
4y = 3x
After solving we get y = 6, x = 8
Perimeter = 2 (x + y) = 28