The sum of weights of an iron and of a copper piece is 1280 grams.The volume of a copper piece is twice that of iron piece.If weight of 1 cubic centimeter of iron is 7.8grams and that of copper is 8.9grams.Find the volume of each?
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mass of iron=mi=vixdi where v&d are vol and density
mass of copper=mc=vcxdc
mi+mc=1280 gms and vc=2xvi
vixdi+vcxdc=1280
vixdi+2vixdc=1280, now,di=7.8/cc & dc=8.9
putting the values we get,
vix7.8+2xvix8.9=1280
vix7.8+17.8vi=1280
25.6vi=1280 , therefore,vi=50cc,thus vol of copper=vc=2vi=100cc
Hope This Helps :)
mass of copper=mc=vcxdc
mi+mc=1280 gms and vc=2xvi
vixdi+vcxdc=1280
vixdi+2vixdc=1280, now,di=7.8/cc & dc=8.9
putting the values we get,
vix7.8+2xvix8.9=1280
vix7.8+17.8vi=1280
25.6vi=1280 , therefore,vi=50cc,thus vol of copper=vc=2vi=100cc
Hope This Helps :)
harishlaks:
tq so much
Uh r always welcome :)
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The sum of weights of an iron and of a copper piece is 1280 grams.The volume of a copper piece is twice that of iron piece.If weight of 1 cubic centimeter of iron is 7.8grams and that of copper is 8.9grams.Find the volume of each?
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