A patient ingests 100 milligrams of a certain drug which dissolves away at a constant rate of 20% per hour. How long will it tak

Question

7nadin3 [17]

2 years ago

5

A patient ingests 100 milligrams of a certain drug which dissolves away at a constant rate of 20% per hour. How long will it tak

e before there are only ten milligrams left?

Mathematics

2 answers:

creativ13 [48] · Answer 1 · 2023-05-08T23:19:39+03:00

creativ13 [48]2 years ago

6 0

Answer:

Answer:

The correct answer is 15.3 hours

Step-by-step explanation:

See the attached image below to understand why this is correct.

Strike441 [17] · Answer 2 · 2023-05-09T01:22:35+03:00

100×20%=20mg is dissolved in one hour

20mg will be dissolved away which mean it will take 4 hours for 80mg to dissolve way

since it takes 20mg 1hour it will take 10mg half and hour or 30min to dissolve away which gives us a total of 4.5 hrs to dissolve 90mg away and leave us with 10mg