Truth is I got this question word to word including the numbers from the qbank. I picked 70 hrs X 4 = 280 hrs, and I got wrong. The correct answer was 70 hrs alone. I re-read the question and from there I came to know that all they wanted was half life alone; which in this case is 70 hours.
That question which I posted is a question from the Qmax question bank from FirstAid. The answer they give in their explanation is 70.
But I am also confused about this question, so I reported it, because it seems to me that they ask for steady state, and you need to multiply 70 x 4 to get 280 as most of you answered.
Also, in the explanation that comes with the question, they start by writing "First you need to calculate for half time", as if a second calculation would be needed to get to the answer, so even the explanation seems incomplete.
It is also known that FirstAid has some kinks, im 2 months away from the exam and im pretty sure the answer is 280, I hope I get a response from the FirstAid team.
Thanks for your feedback guys.
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