If 11.25 m of a uniform iron rod weight 42.75 kg, what will be the weight of 6 m of the same rod ?  Choose the correct choice from the following choices.
A) 22.8 kg  B) 25.6 kg  C) 28 kg  D) 26.5 kg  E) None of these
Solution   Let the required weight be x kg. Then, Less length, Less weight   ∴ 11.25 : 6 :: 42.75 : x ⇔ 11.25 × x = 6 × 42.75 ⇔ x = ⇔ x = (6x42.75)/11.25=22.8. 22.8 kgnswer 22.8 kg
<result>A</result>
If 11.25 m of a uniform iron rod weight 42.75 kg, what will be the weight of 6 m of the same rod ?