Use the provided exchange rates to calculate the ZAR per unit for AED and the BWP per GBP.

"Units per ZAR" means how many units of a foreign currency you get for 1 South African Rand (ZAR).
"ZAR per unit" means how many ZAR you need to buy 1 unit of the foreign currency.
These two values are reciprocals of each other.

For AED, "Units per ZAR" = 0.197656. This means $0.197656 \text{ AED} = 1 \text{ ZAR}$.

To find how many ZAR are in 1 AED, we calculate:

Rounding to four decimal places, we get $5.0593 \text{ ZAR}$.
This shows how the United Arab Emirates (AED) of $5.0593 \text{ ZAR}$ per unit was obtained.

2.2.2

For GBP: $1 \text{ GBP} = 23.2278 \text{ ZAR}$
For BWP: $1 \text{ ZAR} = 0.713470 \text{ BWP}$ (from "Units per ZAR")

We want to find how many BWP are equivalent to $1 \text{ GBP}$.
First, convert $1 \text{ GBP}$ to ZAR:
$1 \text{ GBP} = 23.2278 \text{ ZAR}$

Next, convert this amount of ZAR to BWP:
$23.2278 \text{ ZAR} \times 0.713470 \text{ BWP/ZAR} = 16.57462... \text{ BWP}$

The exchange rate between British Pound Sterling (GBP) and Botswana Pula (BWP) is approximately $\boxed{1 \text{ GBP} = 16.5746 \text{ BWP}}$.

2.2.3

From the table, "ZAR per unit" for BRL is 3.1917. This means $1 \text{ BRL} = 3.1917 \text{ ZAR}$.

Dudu sent $3000 \text{ BRL}$.
Amount in ZAR = $3000 \text{ BRL} \times 3.1917 \text{ ZAR/BRL}$
Amount in ZAR = $9575.1 \text{ ZAR}$

Rounded amount = $\text{R}9575$.

Bongani received $\boxed{\text{R}9575}$.