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# An alloy contains the copper and aluminum in the ratio 7:4. While making the weapons from this alloy, 12% of the alloy get destroyed. If there are 12 kg o

An alloy contains the copper and aluminum in the ratio 7:4. While making the weapons from this alloy, 12% of the alloy get destroyed. If there are 12 kg of aluminum in the weapon, then the weight of the alloy required is :

• Option 1)

45kg

• Option 2)

40kg

• Option 3)

37.5 kg

• Option 4)

14.4 kg

• Option 5)

48 kg

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Copper : Aluminum = 7 : 4

$\inline \left ( \frac{88}{100} \right )\times \left ( \frac{4x}{11} \right )=12$

$\inline x=37.5\, Kg$

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