an alloy contains 40%of copper,42%of nickel and the rest is zinc .find the mass ...

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an alloy contains 40%of copper,42%of nickel and the rest is zinc .find the mass in zinc in 1kg of alloy

friends please solve fast it's my exam today

SehrawatVarsha2005 As, copper=40%
nickel=42%
zinc= ?
Total mass(%) = mass of copper+mass of nickel+ mass of zinc
100 = 40+42+mass of zinc
100= 82+mass of zinc
100-82 = mass of zinc
mass of zinc =28%

SehrawatVarsha2005 ur wlcm

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