Yes, no, well, fine. It is a bit more complex really.
Afrikaans is (wow) invented in Africa. It is using Dutch grammar, but has a lot of words from especially Malaysia, Java, and so on. It is quite simple, not too many words and the grammar is not particular difficult to get on with (I could after some 7 months after all).
The Java influence is significant insofar as a lot of the Dutch came from Java, not necessarily from Holland itself. They took their slaves along, hence the Muslim community got established from java.
Funny little thing: one of the first books to be printed in SA is a Muslim prayer book, printed in Cape Town. It is using Arabic lettering, but the language used is: Afrikaans (How, I don't know).
On top of, Afrikaans is also influenced by the Dutch coming here, which were sailors and military personnel.
That influence can be seen in a lot of words used (btw, I was in Holland some time ago, they could easily understand my Afrikaans but found it very old-fashioned, rather prinmitive and so on).
A good word in Afrikaans for kitchen is Kombuis. That thing (in Dutch) is found onboard a ship, not in a house.
Warfare in Afrikaans is Orlog - something maritime as well
... and so on.
The majortity of the so-called coloured community is Afrikaans speaking. One province (Northern Cape) is 68% Afrikaans speaking. Outside of the cities, it can be Afrikaans. If I am in Pietersurg (Polokwane), I would be addressed in Afrikaans by default.
That said. English is the dominant language insofar as we are all supposed to be (reasonable) fluent in English and then go for whatever woudl suit us.
Wether it is English is also open to debate, as we tend to use a lot of local words interchangeable at all times (a bit of a mix really).
With 11 official languages we have plenty of choice.
Another funny is that we are probably (Marius, help!) majority Zulu. If yuo just hapen to be black, and not Zulu, a Zulu might not answer you if yuo cannot speak his language. I am SePedi speaking from Limpopo, which does not carry any weight in Eastern Cape among Xhosa (which I cannot get my tongue around)
The real "bushmen" from Northern Cape (branching into Namibia) have a language which is mostly just 'click' sounds. sounds very funny and a total mystery (to me at least). How does a name like "X!" grab you.
So, It is a bit more complex
Ivan