srw
It's a bit more complicated than that...
A sensible way of writing a fraction ("two and a third" - 2 1/3) rather than using an improper fraction (7/3) which is very difficult to relate easily to a whole number.I don't ever recall mixed numbers, and what exactly are they for?!
Actually, thinking about it, you didn't need to do the sums for that question, since all three answers were the same in improper terms - all you had to do was work out which was the correct mixed-improper equation.