Question

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

Answer 1

Answer:

1.2kg

Step-by-step explanation:

The amount of gunpowder =8 kg=8000 g ....[WKT 1 kg=1000 g]

Quantity of nitre in gunpowder =75% of 8000 g

=(75/100)×(8000)

=(75×80)

=6000 g=6 kg

Quantity of sulphur in gunpowder =10% of 8000 g

=(10/100)×8000

=(10×80)

=800 g=0.8 kg

The quantity of charcoal in gunpowder =[8000−(6000+800)]

=[8000−6800]

=1200 g

=1.2 kg

∴ the quantity of charcoal in 8 kg of gunpowder is 1.2 kg