Any help please? "A sales manager buys antacid in bottles by the gross...."

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jerrysmom2015

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Okay so I need help with this question.

A sales manager buys antacid in bottles by the gross. if he goes through 3 bottles of antacid every day how long will the gross last?

Ok so i am using a study guide for my test.

Gross equals 12 dozens right

How do the study guide get 144? the answers are A) 3 days B) 20 days C) 48 days D) 144 days

the correct answer is 144. How did they get that?
 
jerrysmom2015 said:
Okay so I need help with this question.

A sales manager buys antacid in bottles by the gross. if he goes through 3 bottles of antacid every day how long will the gross last?

Ok so i am using a study guide for my test.

Gross equals 12 dozens right

How do the study guide get 144? the answers are A) 3 days B) 20 days C) 48 days D) 144 days

the correct answer is 144. How did they get that?
Click to expand...
If you posted the problem correctly - the answer CANNOT be 144. What did you get?
 
Well, the problem asks "how long will the gross last?" (emphasis mine), which seems to imply that the manager bought just the one gross. You've correctly identified that 1 gross is 12 dozen. So how many bottles are in a dozen? If the manager uses 3 bottles each day, how many days will the gross last?
 
I suspect that you confused "one gross"= 12 "dozen"= 12*12= 144 with the final answer. If he buys the bottles "by the gross" then he buys 144 bottles at a time. Since he goes through 3 bottles a day (I used to have a job like that) they will last 144/3= 48 days.
 
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