Question

HELP PLEASE! :)

Answer 1

Answer:

6.5 minutes

Step-by-step explanation:

Given :

⇒ 10 seconds to remove 3% of the total gas contained

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Solving :

⇒ Time taken to remove 99% of the gas = 99%/3% × 10 seconds

⇒ Time taken = 33 × 10 = 330 seconds

⇒ Time taken = 6 minutes 30 seconds

⇒ Time taken = 6.5 minutes

Answer 2

Step-by-step explanation:

hope you can understand