This article from the BBC website made me chuckle.
The first question is aimed at pre-entry university applicants in China.
The second question is aimed at 1st year students already at university in England.
Now, I'm not a maths whizz by any means (perhaps because I went through the English school system rather than China's?) but the difference between the two tests is surprising. So much so that it has raised concerns that English standards are not high enough.
If you can solve the Chinese test question, a £500 prize from the Royal Society of Chemistry is on offer (and perhaps a place at a Chinese university, I presume?).