1st Jan 2020, Started his business with an investment of RO 45,000 in cash.

2nd Jan 2020, Purchases computer accessories of RO 20,000 on credit from Mr. Salim.

31st Jan 2020, Sold computer accessories worth RO 15,000 for cash.

1st Feb 2020, Sold goods on credit to Mr. Abdullah worth RO 20,000.

2nd Feb 2020, Mr. Abdullah returned defective goods worth RO 5,000.

1st Mar 2020, Returned defective goods to Mr. Salim worth RO 3,500.

2nd Mar 2020, Received cheque from Mr. Abdullah for RO 15,000.

( this transactions comes under which vouchers,dipet note,purchase,joural,receipt ,sale or contra..)