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An alloy weighing 2000 gm contains lead and tin. The weight of tin in the alloy is 700 gm. What percentage of the alloy is lead?

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An alloy weighing 2000 gm contains lead and tin. The weight of tin in the alloy is 700 gm. What percentage of the alloy is lead?
1. 60%
2. 45%
3. 65%
4. 33.33%
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Correct Answer - Option 3 : 65%

Given:

An alloy weighing 2000 gm contains lead and tin.

The weight of tin in the alloy is 700 gm.

Calculation:

Percentage of tin in the alloy = 700/2000 × 100

= 35%

∴ Percentage of lead in the alloy = 100% - 35% = 65%

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