Question

Gunpowder contains 75% of nitre and 10% of sulphur,and the rest of its charcoal.Find the amount of charcoal in 8kg of gunpowder.

Answer 1

15%of charcoal bcz 75+10=85
Then 85-100=15

Answer 2

Amount of charcoal = 100% - 85% = 15 %
Therefore, 15% of 8 kg of gunpowder = 15100×8 = 1.2 kg

The answer is 1.2kg