Question

an alloy contains 32% copper 40% Nickel and rest zinc. find the mass of the zinc in 1 kg of the alloy

Answer 1

$\textbf{heya}$
Let the % be x.

40 + 32 + x = 100

72 + x = 100

x = 100 - 72

x = 28.

Given, Mass  = 1 Kg

So, mass of zinc = 28 / 100

                            = 0.28 Kg.

Hope this helps!

Answer 2

The answer is 280grams as the percentage of zinc in alloy is 28% so 28% of 1000 grams is 280 grams