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Nelie is washing her one week's laundry one evening. The washing machine works at 480 watts, the drier at 550 watts The 50 watt lightbulb and 200 watt electric fan were used while washing for 4 hours. Washing consumes 4 hours while drying 2 hours. the 750 watt electric water pump was running for 4 hours too. The price for generating 1kWh is ₱4.50. How much Nelie will have to pay for the generation charge?

Let E be the electrical energy

Ewashing machine = (__kW) (__hours) = ____kWh

Edryer = (__kW)(__hours) = ____ kWh

Elightbulb = (__kW)(__hours)=____ kWh

Eelectric fan = (__kW)(__hours)= ___kWh

Ewater pump= (__kW)(__hours)=___kW

Total energy consumption= ___kWh
Generation= ____kWhx₱4.50/kWh= ₱____
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Sagot :

Tristangrey777idn

Answer:

Let E be the electrical energy.

ℎ ℎ = (0.480)(4ℎ) = 1.92ℎ

= (0.550)(2ℎ) = 1.1ℎ

ℎ = (0.05)(4ℎ) = 0.2ℎ

= (0.200)(4ℎ) = 0.8ℎ

= (0.750)(4ℎ) = 3ℎ

= 7.02ℎ

= 7.02ℎ x ₱4.50/kWh= ₱31.59

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