The area of a rectangle is thrice that of a square. The length of the rectangle is 40 cm and the breadth of the rectangle is (3/2) times of the square. The side of the square in cm is:
Options:
A . 15
B . 20
C . 30
D . 60
Answer: Option B
Side of the square = x cm Breadth of the rectangle = 3/2 x cm Area of rectangle = (40 x 3/2 x) sq.cm = (60x)sq.cm 60x = 3x2 or x = 20 Hence, the side of the square = 20 cm
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