an alloy contains 40%copper 32%nickel and rest zinc find the mass of zinc in one kg of the alloy.
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You can take zinc as x. The formula is 40%+32%+x%=100%. It is further expanded as 72%+x%=100%. The next step is x%=100%-72%. The mass is 28%. You can convert the mass into grams.
To get the precise answer, we need to convert percentage into decimal. For that, you need to divide 28 by hundred. Finally, you can find the mass as 0.28g.
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