what was the total amount paid?

This isn't the homework column.

Sears usually offers 12 month no interest or finance charge.

So in reality Donna paid exactly as much as her bill said

when she paid it off after 60 days.

And even if I was in a mood to do your homework...

tell your teacher to use real life examples.

Try the one where Donna starts making her first payment after 12 months and finds out the hard way that all the sudden she gets charged a full years worth of defferred interest payments because she was dumb enough not to pay anything during the first 12 months.

Can you tell me how much that first monthly minimum payment was?

If she bought from Sears, what does it matter what Lowes charges in yearly interest?