receivables and irrecoverable debt

h co had receivables of $3000 at 30 June 2011. at that date she wrote off a debt from Ms. G of $200. during the year H co made credit sales of $15000 and received cash from customers of $10000. she also received the $200 from MS. G that had already been written off in the year to 30 June 2011. what is the final balance on the receivables account at 30 June 2011 and 2012?

my working: 3000 + 15000 – 10000 = $8000
the 200 was received so we don’t have to consider it right?

but it says 8000 is wrong and also there is a question on the receivables account for 2012 but no information on that year in the question?