An alloy contains 15% Zinc, 45% Tin and the rest Iron. Find the quantity of Iron in 2 kg of this alloy.

1 kg

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1.2 kg

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0.8 kg

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0.9 kg

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Solution

The correct option is C
0.8 kg

Percentage of Zinc + Tin = 15 + 45 = 60%

$∴$ Percentage of Iron = 100 - 60 = 40%

Quantity of Iron in 2 kg of alloy = $\frac{40}{100} \times 2$ = $\frac{80}{100}$ = 0.8 kg

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