A till slip indicates the following: Mangos: 2 items for R9,98. Potsoko paid R200,00 for items totalling R179,99. VAT @ 0% is R0,00. VAT zero-rated items include brown bread. The purchase was on 2022/

1.7. Step 1: Calculate the value of B.
From the till slip, the total for Mangos is R9,98 for 2 items.

$$2 \times B = \text{R}9,98$$ $$B = \frac{\text{R}9,98}{2}$$ $$B = \text{R}4,99$$

Step 2: Round B down to the nearest 10c.
Rounding R4,99 down to the nearest 10c means finding the largest multiple of R0,10 that is less than or equal to R4,99.
The largest multiple of R0,10 less than or equal to R4,99 is R4,90.
The rounded value of B is $\boxed{\text{R}4,90}$.

1.8. To calculate C, the change Potsoko must receive:

$$\text{Change (C)} = \text{Cash Paid} - \text{Total Amount}$$

From the till slip:
Cash Paid = R200,00
Total Amount = R179,99

$$C = \text{R}200,00 - \text{R}179,99$$ $$C = \boxed{\text{R}20,01}$$

1.9. The purchase took place on 2022/08/01.

1.10. The purchase took place at 10:35.

1.11. The acronym VAT stands for Value Added Tax.

1.12. From the "VAT SUMMARY" on the till slip, the VAT @ 0% is R0,00. This means 0 items on this specific till slip were VAT zero-rated.

1.13. One item that is VAT zero-rated is brown bread.