Find V$1$ V$5$ V source I$2$ I$3$ I$4$ I$5$ R$1$ R$2$ R$3$ R$4$ R total.

V$2=60\mathrm{.}0$V$,$ V$3=90\mathrm{.}0$V$,$ V$4=50\mathrm{.}0$V$,$ I$1=1\mathrm{.}5$A$,$ I total$=4\mathrm{.}0$A$,$ R$5=30$ohms.  

 

Indicate where appropriate. what laws were used to find the values is calculations were not needed $($KCL$/$KVL$).$