The South African taxi association, Transaction Capital, published its results for the current state of the South African minibus taxi industry for the year ended September 2019 - NSC Mathematical Literacy - Question 4 - 2021 - Paper 2

Using exchange rate A:

$\text{Net Worth in Euros (A)} = \frac{50000000000}{15.987} \approx 3127524840.66$

Using exchange rate B:

$\text{Net Worth in Euros (B)} = \frac{50000000000}{15.966728} \approx 3128312422.06$

Difference:

$\text{Difference} = 3128312422.06 - 3127524840.66 \approx 7875881.40 \text{ euros}$

It is advisable to use exchange rate B for the presentation because it reflects a more favorable conversion rate, thus showcasing a higher net worth in euros, which can positively influence the perception of potential clients.

The total number of trips made by all minibus taxis daily is 15 million. The ratio of daily commuter trips for train, bus, and minibus taxi is given:

$\text{Total ratio} = 4 + 5 + 7 = 16$

To find the number of trips for each mode of transport:

$\text{Minibus taxi trips} = \frac{7}{16} \times 15000000 = 6562500$

Thus, the number of commuters who do NOT use a minibus taxi is:

$\text{Commuters NOT using minibus taxis} = 15000000 - 6562500 = 8437500$

Minibus taxis travel approximately 19 billion kilometers a year.

To find the average distance covered in one trip:

$\text{Distance per trip} = \frac{19000000000}{24000} \approx 791666.67 \text{ km/trip}$

The distance to the moon and back is: 2 x 384,402 km = 768,804 km.

Now, comparing:

$\text{Number of return trips to the moon} = \frac{19000000000}{768804} \approx 24769.56$

Since 24769.56 is greater than 24000, the owner's statement is valid.