Hi all,
I am struggling a little bit with the concept of weighted averages.
A certain stationary store sells pencils for $2 and pens for $3. If the average price of pens and pencils sold in a certain day is $2.60, how many pens were sold?
To get the exact number of pens sold, you would need to know the total number of pens and pencils sold, correct?
But how do you determine the ratio of pens to pencils sold with only the above information?
Thank you!
I am struggling a little bit with the concept of weighted averages.
A certain stationary store sells pencils for $2 and pens for $3. If the average price of pens and pencils sold in a certain day is $2.60, how many pens were sold?
To get the exact number of pens sold, you would need to know the total number of pens and pencils sold, correct?
But how do you determine the ratio of pens to pencils sold with only the above information?
Thank you!
