Question

an alloy contains 20% tin and 25% aluminium and the rest is zinc how much zinc if
1.5 kg alloy

Answer 1

Hay mate , here is the solution of your question MARK IT AS THE BRAINLIST IF IT WORKS ...
weight of alloy = 1.5 kg
Part of tin = 20%
part of tin in kg = 20% of 1.5 kg
=> 20/100×1.5
=> 0.2×1.5
=> 0.3
weight of aluminium = 25%
weight of aluminium in kg = 25% of 1.5
=> 25/100×1.5
=> 0.25×1.5
=> 0.375
total weight of aluminium and tin = 0.375+0.3 = 0.675
weight of zinc = 1.5 - 0.675 = 0.825
Hence the required weight of zinc is 0.825 kg or 825 gram.
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checking results:-
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=> 0.375+0.825+0.3 = 1.5