Question

A chalk contains calcium , carbon and sand in the ratio 5 : 12 : 8. Find the percentage of calcium, carbon and sand in the chalk.​

Answer 1

Answer:

percentage,

calcium = 20%

calcium = 20%carbon= 48%

calcium = 20%carbon= 48%sand = 32%

Step-by-step explanation:

Let , amount of calcium in chalk be 5x

then, amount of carbon= 12x

and, amount of sand = 8x

total weight of chalk = amount of calcium + amount of carbon + amount of sand

total weight of chalk = 5x + 12x + 8x = 25x

percentage of calcium = (5x÷25x) × 100 = 20%

percentage of carbon = (12x÷25x) × 100 = 48%

percentage of sand = (8x÷25x) × 100 = 32%