A small project consists of 3 activates P, Q and R to be executed in that sequence. The relationship between Time Duration (in ‘Units’ of time – T) and corresponding total direct cost (C units) for each of the activities, for alternate mutually exclusive possible durations for each activity, are tabulated herewith:

P		Q		R
T	C	T	C	T	C
8	250	6	340	8	400
9	235	7	320	10	375
10	225	8	295	12	350
11	215	9	275

For a total duration of 25 units of time, the least total direct cost for the complete project will be