Question

gunpowder contains 75% nitre 10% Sulphur and the rest of it is charcoal find the quantity of charcoal in 8 kg of gunpowder

Answer 1

percentage of nitrogen = 75
percentage of sulphur = 10
so, percentage of charcoal = 100- ( 75+ 10) =100 - 85. = 15
so, 15 percent of 8 kg = 15/100 * 8 = 1.2
so, content of charcoal is 1.2 kg.

Answer 2

percent. of nitre=75
percent of sulphur= 10
100-(75+10)
100-85=15
quantity of chacoal in 8kg gunpuder = 15/100*8=1.5kg

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