Purchase Order

Hi I'm a student and there's a homework for us that i'm having problems with.

Purchase Order # 11: From Zodiac Plus, $500 plus $25 GST and $40 PST, for one round of 1.5m seance and consultation table. INvoice total $565. Terms: net 30.

Purchase Invoice #531: From zodiac plus to fill purchase order # 11, $500 plus $25 GST and $40 PST, for one round of 1.5m seance and consultation table. INvoice total $565. Terms: net 30.

I'm not sure which account type should i use for each transactions.

Can anyone please help me?

Thanks.