Suppose three corporations each manufacture a different product, although each needs the others goods to produce its own. Moreover, suppose some of each manufacturers production is consumed by individuals outside the system. Current internal and external consumptions are given in the table below, but it has been forecast that consumer demand will change in the next several years and that in 5 years consumers will demand 50 units of product A, 70 units of product B, and 50 units of product C. Find the total output needed to be made by each corporation to meet the predicted demand.

	A	B	C	Consumer	Total
A	100	50	40	60	250
B	20	10	30	40	100
C	30	40	30	100	200

____?_____ units of A

____?_____ units of B

____?_____units of C