A manufacturing company has four types of cost (identified as Tl, T2, T3 and T4).
The total cost for each type at two different production levels is:
Cost type Total cost for 125 units Total cost for 180 units
$ $
T1 1,000 1,260
T2 1,750 2,520
T3 2,475 2,826
T4 3,225 4,644
Which two cost types would be classified as being semi-variable?