Answer:
There are 27 boxes are on the shelf at the start of the day.
Step-by-step explanation:
Let number of boxes are on the shelf at the start of the day is x
According to given situations :
On one day, a store sold 16 boxes of rice
i.e, [tex]=x-16[/tex]
Restocked the shelf with 22 boxes,
⇒ [tex]=x-16+22[/tex]
[tex]=x+6[/tex]
But 27 boxes sold
⇒ [tex]=x+6-27[/tex]
[tex]=x-21[/tex]
Restocked with 30 boxes,
⇒ [tex]=x-21+30[/tex]
[tex]=x+9[/tex]
But 15 boxes sold,
⇒ [tex]=x+9-15[/tex]
[tex]=x-6[/tex]
There are now 21 boxes of rice on the shelf.
So, [tex]x-6=21[/tex]
[tex]x=27[/tex]
Therefore,There are 27 boxes are on the shelf at the start of the day.
