Max z=4x1+6x2+5x3
st
3x1+x2+2x3≥64 resc 1
x1+x2+x3≥20 resc 2
x1+x2+3x3≥30 resc 3
xi≥0

optimal matrix
0 0 3 0 2 2|100
---------------
0 0 3 1-5 2| 24
0 1 2 0-1 1| 10
1 0-1 0 2-1| 10


WHAT IS THE RANGE ON THE AVAIL UNITS OF RESC 3(b3) FOR WHICH THE CURRENT BASIS REMAINS OPTIMAL?