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asked ago in Commercial Mathematics by (53.1k points)

In 15 days, the earth picks up 1.2 × 108 kg of dust from the atmosphere. In how many days it will pick up 4.8 × 108 kg of dust?

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answered ago by (93.4k points)
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Best answer

Let us consider number of days as ‘x’ days

Weight of dust (kg)1.2 × 1084.8 × 108
Time (days)
15x

(1.2 × 108)/15 = (4.8 × 108)/x

By cross-multiplying

(1.2 × 108) x = (4.8 × 108) × 15

x = (4.8 × 10× 15) / (1.2 × 108)

= 60

∴ The dust of 4.8 × 108 kg will be picked up in 60 days from the atmosphere.

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