an alloy consists of 20% of copper ,50% of nickel and the rest copper .find the mass of copper in 28.4 kg of the alloy
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mass of copper=28.4kg
copper=20%
nickel=50%
so,
total alloy=100%
let, rest copper=x
total alloy=copper+nickel+rest of copper
100%=20%+50%+x
x=100%-70%
x=30%
total copper=20%copper+rest of copper
total copper=20%+30%
=50%
i.e
50% of alloy is copper
=50/100*28.4 kg
=1/2*28.4 kg
=14.2kg answer
copper=20%
nickel=50%
so,
total alloy=100%
let, rest copper=x
total alloy=copper+nickel+rest of copper
100%=20%+50%+x
x=100%-70%
x=30%
total copper=20%copper+rest of copper
total copper=20%+30%
=50%
i.e
50% of alloy is copper
=50/100*28.4 kg
=1/2*28.4 kg
=14.2kg answer
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