Question

If 22.5 m of a uniform iron rod weighs 85.5 kg, what will be the weight of 5 m of the same rod?

Answer 1

Weight of 22.5 m of uniform iron rod = 85.5 kg

Weight of 1 m of uniform iron rod = `85.5/22.5` kg

Weight of 5 m of uniform iron rod =`5​ × 85.5/22.5  = 427.5/22.5`  = 19 kg

Thus, the weight of 5 m of an iron rod is 19 kg.