Trouble understanding a question for a task book

[Lynchbox]

Hi all, new to the forums so not sure if this is the type of question we can ask here, but I have a workbook with data and tasks to complete on it and I'm having trouble understanding the attached question.
Especially when according to my formula (=L2*100/K2) for the ppm none are even 5p?

 

[Lynchbox]

Especially when according to my formula (=L2*100/K2) for the ppm none are even 5p?

Ignore this part I read that part wrong.

 

[kweaver]

It would be more helpful if you show your data using XL2BB so that no one trying to help you has to try to recreate your information.

 

[kweaver]

Also, is "PPM" Price per minute or Pence per minute or what? Is that calculated or input?

No one likes to do student assignments here...which is what this sounds like.
With a better display (XL2BB) of the data and a clearer explanation of what you need, you'll probably get some guidance that should help.