E.M.A.T = 1 Cycle + ($\frac{16}{100}$*5 Cycles)+($\frac{16}{100}*\frac{8}{16}$*50 Cycles)=5.8 cycles
or
E.M.A.T = $\frac{100*TL1+16*TL2+8*Memory}{100}$ = $\frac{100*1+16*5+8*50}{100}$ =5.8 cycles
or
L1 hit ratio= 0.84
L1 miss = 0.16
L2 hit =0.5
L2 miss = 0.5
E.M.A.T= h1(L1)+(1 - h1)*h2*(L1+L2)+(1- h1)(1- h2)(L1+L2+Memory)
0.84(1)+0.16*0.5*(1+5)+0.16*0.5*(1+5+50)=5.8