Amanda P.

asked • 05/26/17

One of the formulas for calculating the correct dosage for a child is as follows: C= a/(a+12) ∙ A C = child’s dosage in milligrams a = age of the child A = a

i am stuck

1 Expert Answer

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Kenneth S. answered • 05/26/17

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Amanda P.

I am still completely lost with this because I don't know what numbers the letters stand for 
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05/26/17

Arturo O.

I suspect that where the problem says "A = a" it meant to say "A = adult's dosage in milligrams" and was just cut off.
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05/26/17

Arturo O.

Sorry, I meant to say:
 
I suspect that where the problem says "A = a" it meant to say "A = adult's age" and was just cut off.
 
 
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05/26/17

Kenneth S.

Amanda, you have a formula, which I have explained.  It works for any (reasonable) numbers that you would care to substitute. For example, a could be 6 (a six y.o. kid), as I suggested. Plug that in and the fraction that you get is 6/(6+12) which is 6/18 which reduces to one third (as I said).  That means that a child's dosage would be one third of the Adult's dosage, A.
 
On the other hand, the child could be 4 or 7 or 13. Do you get it now??
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05/26/17

Amanda P.

Yes I got it I appreciate it I was thinking about something else but I understand what you are saying. All these math problems i got has got my head spinning. Thank you so much for your help
 
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05/26/17

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