The perimeter of rectangle is 200 meter. The breadth is 1/3 part of the length. What is the length?

A 30m

B 50m

C 60m

D 75m

Correct Answer: Option D

Length= x

Breadth= x/3

Then,

2(x+ x/3) = 200

or, x+ x/3 = 100

or, (3x+x)/3 = 100

or, 4x = 300

or, x = 300/4 = 75