September 2018 1 20 Report
Sebuah rumah menggunakan 5 lampu masing masing 40 watt,tv 60 watt,dan kulkas 150 watt.setiap hari rata rata di gunakan selama 5 jam. jika harga 1kwh=Rp.500.berapakah biaya yang harus di bayar selama 30 hari ?
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