Aschool sore has 1200 pencils in stock , and sells an average of 24 pencils per day. the manager reorders when the number of pencils in stock is 500 . in how many days will the manager have to reorder ? plz me : (

You have 1200 pencils and you order more when your down to 500

So take 1200 - 500 to find how many pencils will be sold before you reorder.
1200 - 500 = 700

Then you take 700 / 24 to find how many days until you reorder.
700 / 24 = 29.1666666666666... You have round up because on day 29 you will have 504 pencils left

So 30 days until the manager reorders