If 11.25 m of a uniform steel rod weighs 42.75 kg. what will be the weight of 8 m of the same rod?	Options:
A) 22.8 kg
B) 25.6 kg
C) 28 kg
D) 30.4 kg
E) none of these

Rationale: explanation : let the required weight be x kg . then , less length , less weight ( direct proportion ) = > 11.25 : 8 : : 42.75 : x = > 11.25 x x = 8 x 42.75 = > x = ( 8 x 42.75 ) / 11.25 = > x = 30.4 answer : d
Answer: D