Question

4. In 15 days, the earth picks 3•9×10 pounds of dust from the atmosphere how much dust will it pick in 40 days​

Answer 1

Answer:

please mark me as brainlest answer

Step-by-step explanation:

Let x be the number of days taken by the earth to pick up 4.8×10

8

kg.

Days 15 x

Dust ( in kg ) 1.2×10

8

4.8×10

8

Since, the amount of dust picked up by the earth and the number of days are in direct variation, we get:

⇒

x

15

=

4.8×10

8

1.2×10

8

⇒ x=15×

1.2

4.8

⇒ x=60

∴ The required number of days will be 60.

Answer 2

Answer:

1 dont know sorry please