If 11.25 m of a uniform steel rod weighs 42.75 kg. what will be the weight of 9 m of the same rod?  Pick
A) 22.8 kg B) 34.2 kg C) 28 kg D) 26.5 kg E) None of these
Explanation :   Let the required weight be x kg. Then, Less length, Less weight (Direct Proportion)   =&gt; 11.25 : 9 :: 42.75 : x   =&gt; 11.25 x x = 9 x 42.75   =&gt; x = (9 x 42.75) / 11.25   =&gt; x = 34.2   Answer : 34.2 kg
<result>B</result>
If 11.25 m of a uniform steel rod weighs 42.75 kg. what will be the weight of 9 m of the same rod?