On ANNEXURE A, a bank statement of Mr Williams, is shown. On ANNEXURE A to answer the questions that follows.

The bank balance at the end of business on the 6th of February 2016 is $\boxed{\text{R8 257,99}}$.

5.1.2)

On 04/02/2016, the balance before the Vodacom transaction was R18 449,68. The balance after the transaction was R17 557,99. Since the balance decreased, it was a debit transaction.

On 15/02/2016, the balance before the Trading account transaction was R6 640,49. The transaction amount was R2 511,50. Since it was a debit transaction (balance decreased), the new balance B is:

The value of A is $\boxed{\text{R891,69}}$ and the value of B is $\boxed{\text{R4 128,99}}$.

5.1.3)

Rent amount (06/02/2016) = R6 800,00
Monthly salary (01/02/2016) = R20 180,43

The rent amount as a percentage of the monthly salary is $\boxed{33,70\%}$.

5.1.4)

There are 13 distinct transactions listed on the statement.

A credit transaction increases the bank balance.

• 01/02/2016: Monthly salary (Balance increased from an assumed R0 to R20 180,43) - Credit
• 02/03/2016: Trading account (Balance increased from B = R4 128,99 to R10 083,99) - Credit
• 18/03/2016: Trading account (Balance increased from R8 946,94 to R12 023,94) - Credit There are 3 credit transactions.

The probability of finding a credit transaction is $\boxed{\frac{3}{13}}$.