42 m of an iron rod weight 162 kg. How much will 28 m of the rod weight?
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Step-by-step explanation:
The weight of42 m of iron rod=162 kg
so the weight of 1 m of iron rod=162/42=27/7 kg
thus the weight of 28m of rod=(27/7)×28
=27×4=108 kg.(answer)
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