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3. An adult can take 400 mg of ibuprofen. Each hour, the amount of ibuprofen decreases by 25%. How much ibuprofen is left in the system after 6 hours?

User Tcanarchy
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2 Answers

1 vote

Answer: 51

Explanation:

i honestly don’t know, i just picked 51 and it’s right so yeaa

User Clive Jefferies
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4 votes

Answer: 71.2 mg

Explanation:

A = P(1 - r)ⁿ where:

  • P is the initial amount
  • r is the rate of decrease
  • n is the time

A = 400(1 - 0.25)⁶

= 400(0.75)⁶

= 400(0.178)

= 71.2

User Niclas Sahlin
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