Five friends - A,B,C,D and E - have different number of chocolates and biscuits with them among 300, 350, 400, 500 and 550. None of them have the same number of biscuits and chocolates.

So my question here is, what does the word 'among' mean here? biscuits + chocolates = (the given numbers)
or is it biscuits individually and chocolates individually?