The answer is $12.08.
All you really have to do is 75/6.21. That's the simpler version of what the previous person said. Even though the statement about 1 American dollar being 6.21 Chinese yuan, the answer would be $12.08.
If we were being literal, 75 yuan would equal 10.70 American dollars, but this question wants to give out incorrect information and make us think differently. The answer to this question is still $12.08.