Algebra
18 Online
OpenStudy (lisa123):
what will be the amount of sugar in milligrams if the size of the milk chocolate bar is reduced from 17.00g to 5.00g
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OpenStudy (calculusxy):
First we should convert the grams into mg...
1 gram = 1000 mg
17 g = 17,000mg
5 g = 5,000mg
OpenStudy (calculusxy):
And then you can subtract 17,000mg - 5,000mg
OpenStudy (calculusxy):
did u get an answer?
OpenStudy (calculusxy):
@lisa123
OpenStudy (lisa123):
12,000mg??
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OpenStudy (calculusxy):
yes!
OpenStudy (calculusxy):
oh wait....
OpenStudy (calculusxy):
if it is just saying to know in mg after it got reduced to 5g, then it is only 5000mg
OpenStudy (lisa123):
no thats not the right answer
OpenStudy (lisa123):
originally there is 17g of milk and 10.5g of sugar in the milk
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OpenStudy (phi):
do they tell how much sugar is in the larger bar ?
OpenStudy (calculusxy):
then i think that you can make a proportion
OpenStudy (lisa123):
thats what i thought idk how to do it
OpenStudy (lisa123):
@calculusxy @phi
OpenStudy (phi):
\[ \frac{5}{17} = \frac{x}{10500} \]
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OpenStudy (lisa123):
17x/5(10500)??
OpenStudy (lisa123):
x=2.948
OpenStudy (lisa123):
294.1
OpenStudy (phi):
I would multiply both sides by 10500
\[ \frac{5}{17}\cdot 10500 = \frac{x}{10500}\cdot 10500 \]
OpenStudy (phi):
on the right side , 10500/10500 simplifies to 1 and 1*x is x
the left side will be the answer in milligrams
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OpenStudy (lisa123):
Thank you!
OpenStudy (phi):
what did you get ?
OpenStudy (lisa123):
3088mg
OpenStudy (phi):
yes, that looks good.