The denominator of a simplest fraction is three times larger, and the numerator is two times smaller, which is equal to two ninths of the original fraction

The denominator of a simplest fraction is three times larger, and the numerator is two times smaller, which is equal to two ninths of the original fraction

The answer may be one-third. There may be a problem with the question. The number of molecules should be doubled. Otherwise, the answer is four-thirds, not the simplest fraction