A mineral smelting company is interested in buying the following type and quantities of ore.

Ore Type	A	B	C	D	E
QTY (Tons)	150	100	75	250	200

Four different companies have submitted the tenders, who undertake to supply of the ore not more than the quantities indicated below:

Ore Supplier	S1	S2	S3	S4
QTY (Tons)	300	250	150	200

The smelting company estimates that its profit per ore will vary according to the ore supplier as indicates in the following table:

	A	B	C	D	E
S1	2.75	3.5	4.25	2.25	1.5
S2	3	3.25	4.5	1.75	1
S3	2.5	3.5	4.75	2	1.25
S4	3.25	2.75	4	2.5	1.75

Determine how should the orders to be places for the dresses so as to maximize the profit (Use both Stepping stone and Modified Distribution (MODI) Method)