1.

36 kg of gunpowder contains 27 kg of salt, 5.4 kg of charcoal and some amount of sulfur. Find the percentage of sulfur.1. 15%2. 10%3. 8%4. 100%

Answer» Correct Answer - Option 2 : 10%

Given:

Gunpowder = 36 kg

Salt = 27 kg

Charcoal = 5.4 kg

Concept:

The percentage of sulfur = (Amount of sulfur / Total amount of gunpowder)× 100

Calculation:

Total weight of gunpowder = 36 kg

According to the question,

Let sulfur be x

⇒ (27 + 5.4 + x) kg = 36 kg

⇒ (32.4 + x) kg = 36 kg

⇒ x = (36-32.4) kg

⇒ x = 3.6 kg

The percentage content of sulfur in the gunpowder = (Amount of sulfur / Total amount of gunpowder) 100

⇒ (3.6/36) × 100%

⇒ 0.1 × 100%

⇒ 10%

Therefore, percentage content of Sulfur is 10%.



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