21. The amount of caffeine in Jan's body goes down by twenty-eight percent every hour. How long, to the nearest hour, until Jan's body has only 28 percent of the caffeine that
was in her original cup?

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Ответ:

Jimm6500

13.09.2022

Mathematics

24, 26, 28

Step-by-step explanation:

The final number is 78

first we can divide 78/3= 26

so 26+26+26= 78

we can leave the middle 26 but we can give 2 from the first number to the last number

24+26+28=78

(This might be wrong but i tried my best)

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21. The amount of caffeine in Jan's body goes down by twenty-eight percent every hour. How long, to the nearest hour, until Jan's body has only 28 percent of the caffeine that was in her original cup?