bantuuiin jawaab pakee caraaa yaaaa

1×38×8=304 wh=>lampu
1×40×8=320 wh=>lampu
1×60×8=480 wh=>lampu
1×100×8=800 wh=>lampu
1×150×6=900 wh=>TV
1×350×1=350 wh=>mesin air
W=304+320+480+800+900+350=3154 wh
3154 wh=3,154 kwh
3,154×750=Rp 2365,5 per kwh
maka dalam 30 hari;
2365,5×30=Rp 70,965 perbulan
atau jika dibulatkan = 71 Ribu perbulan

semoga membantu