Medal
A cafeteria sold 156 cartons of milk in 1 day. Each carton contained 1 c of milk. How many quarts of milk were sold that day?
? qt
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OpenStudy (anonymous):
your hot
OpenStudy (anonymous):
who is this?
OpenStudy (anonymous):
he says that to everyone
OpenStudy (elonasushchik):
Huh..
OpenStudy (anonymous):
oh lol
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OpenStudy (anonymous):
do u mean 1 g of milk?
OpenStudy (elonasushchik):
He dosnt know what he's talking about ...
OpenStudy (elonasushchik):
Not u skate, but smarty..
OpenStudy (anonymous):
no your the first girl shut up @skate-4-life270
OpenStudy (anonymous):
no 1 day
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OpenStudy (anonymous):
oh
OpenStudy (anonymous):
i mean the other 1
OpenStudy (anonymous):
no its what it says in the question
OpenStudy (anonymous):
maybe it was a typo
geerky42 (geerky42):
My hot what? @Smartypants123
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OpenStudy (anonymous):
i dont know maybe it is
OpenStudy (elonasushchik):
1 US Quart=4 US Cups so...
OpenStudy (anonymous):
i really dont understand this question
OpenStudy (jhannybean):
You have 156 cartons of milk a day
1 carton = 1 cup
C1 qt of milk = 4 cups
OpenStudy (jhannybean):
So \[156~\text{cartons} \cdot \frac{1 ~\text{cup}}{1~\text{carton}} \cdot \frac{1~\text{quart}}{4~\text{cups}}\]
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OpenStudy (jhannybean):
You are being asked to convert cartons of milk \(\to\) quarts of milk. That is all you have to do.
OpenStudy (anonymous):
ok so u cross multiply
OpenStudy (jhannybean):
Do you know how to solve by dimensional analysis?
OpenStudy (anonymous):
no
OpenStudy (jhannybean):
What I wanted to do was get from the amount of cartons to the number off cups given (in the problem) then use a known conversion factor to get from the number of cups in a quart of milk.
You will see that the units cancel out, \[156~\cancel{\text{cartons}} \cdot \frac{1 ~\cancel{\text{cup}}}{1~\cancel{\text{carton}}} \cdot \frac{1~\text{quart}}{4~\cancel{\text{cups}}}\] And we will be left with the number of quarts.
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OpenStudy (anonymous):
39
OpenStudy (jhannybean):
Now we just multiply across, \[\frac{156(1)(1~\text{quart})}{(1)(4)(1)}\]
OpenStudy (anonymous):
624
OpenStudy (jhannybean):
and yes, you end up with 39 quarts.
OpenStudy (jhannybean):
i do not know how you are getting these numbers. Reread my posts for a better understanding.
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OpenStudy (anonymous):
156 * 1*1/1*4 = 624
OpenStudy (jhannybean):
That is not correct..
156/4 \(\ne\) 624.
OpenStudy (anonymous):
so the answer is 39 qt?
OpenStudy (jhannybean):
Yes, you are right.
OpenStudy (anonymous):
thank you :)
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OpenStudy (jhannybean):
No problem.
I think where you were getting 624 from was 156 * 4. but we were dividing instead of multiplying.