increasing of length and breadth is proposional..length=6 which changes into 21 and breadth changes to 14..what was the previous value of breadth??  Pick
A) 4
B) 3
C) 2
D) 5
E) 6
Let previous breadth be "b"   previous ratio of length : breadth ==&gt; 6 : b   let increased proportion be "x"   new ratio is ==&gt; 6x : bx ==&gt; 21 : 14   Length 6x = 21   x = 21/6 =&gt; x = 7/2   Breadth   bx = 14   b * 7/2 = 14   b = 28/7= 
<gadget id="calculator">28/7</gadget>
<output>4</output>
&gt; 4   Previous breadth= 4   4NSWER:4
<result>A</result>
increasing of length and breadth is proposional..length=6 which changes into 21 and breadth changes to 14..what was the previous value of breadth??