stalls for,
data dependency = 2
control dependency = 3
structural dependency = 1
data+control dependency = 2+3=5
ideally it will take 1ns to execute an instruction but considering data dependency stalls it will be
= 1+.05x2
similarly considering control and structural dependency and also data structural = 1 + .05x2 + 0.1x3 +
0.02x1 + 0.1x5 = 1.92ns