The breath of a rectangular landscape is 6 times its length. There is a playground in it whose area is 4200 square mtr & which is 1/7 th of the total landscape. What is the breath of the landscape?  Choose the correct answer:
A) 520  B) 420  C) 320  D) 550  E) 450
Sol. 6x * x =7* 4200   x = 70   Length = 6* 70= 
<gadget id="calculator">6* 70</gadget>
<output>420</output>
420 420
<result>B</result>
The breath of a rectangular landscape is 6 times its length. There is a playground in it whose area is 4200 square mtr & which is 1/7 th of the total landscape. What is the breath of the landscape?