A ham and sandwich set and a bacon roll set cost $x and Sy respectively.
Depending on the types of side dishes and drinks, the ranges of values of x and y are

5.8≤x≤9.6 and 6.4≤ y ≤10.2

(i)
Form an inequality, in terms of x and y, for the total cost of three ham sandwich sets and
two bacon roll sets.

(ii)
Find the maximum price difference between each of the two sets.