May 2019 1 35 Report
Pak irfan memasang 2 lampu 25w/220v, 2 lampu 40w/220v, 1 buah lampu 60w/220v, dan 1 buah lampu 10w/220v dirumahnya. seluruh lampu rata rata dinyalakan 8 jam setiap harinya pada tegangan 220 v. hitunglah biaya energi listrik yang harus dibayar selama 30 hari jika tiap kwh= rp.750,00
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