bantu ya kak pakai cara nya

a).
2 x 10 x 10 = 200 wh
2 x 40 x 10 = 800 wh
1 x 80 x 10 = 800 wh
1 x 300 x 2 = 600 wh
1 x 75 x 24 = 1800 wh

setiap hari
= 200 + 800 + 800 + 600 + 1800
= 4200 wh

b).
tiap bulan
= 4200 x 30 hr
= 126000 wh

c).
126000/1000 x 200
= 126 x 200
= Rp15200

maaf kalo salah..