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an adult takes 600mg of ibuprofen. Each hour, the amount of ibuprofen in the persons system decreases by about 29%. About how much ibuprofen is left after 5 hours

User Shu Wu
by
7.2k points

2 Answers

5 votes

Final answer:

Approximately 108.27mg of ibuprofen is left in the person's system after 5 hours.

Step-by-step explanation:

To find out how much ibuprofen is left after 5 hours, we need to calculate the decrease in the amount of ibuprofen each hour. Given that the amount decreases by about 29% each hour, we can calculate the remaining amount after 5 hours.

Step 1: Calculate the amount of ibuprofen left after 1 hour: 600mg - (0.29 * 600mg) = 600mg - 174mg = 426mg

Step 2: Repeat Step 1 for each subsequent hour, using the previous result as the new amount:

Hour 2: 426mg - (0.29 * 426mg) = 426mg - 123.54mg = 302.46mg

Hour 3: 302.46mg - (0.29 * 302.46mg) = 302.46mg - 87.72mg = 214.74mg

Hour 4: 214.74mg - (0.29 * 214.74mg) = 214.74mg - 62.21mg = 152.53mg

Hour 5: 152.53mg - (0.29 * 152.53mg) = 152.53mg - 44.26mg = 108.27mg

Therefore, after 5 hours, approximately 108.27mg of ibuprofen is left in the person's system.

User Pablopixel
by
7.7k points
3 votes
This works just like exponential decay...

final=initial(rate^time)...

f=600(1-.29)^5

f(5)=108.25
User Beygi
by
6.2k points
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