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Val’s whole-house central air conditioner uses 2,500 watts when running. Val runs the AC 7 hours per summer day. Electricity costs (18 cents)/(1 kilowatt-hour). How much does Val’s AC costs to run for a summer month of 30 days?

Sagot :

adioabiola

The total cost to run Val’s AC costs for a summer month of 30 days is $94.5.

Cost of electricity

Quantity of electricity used in kilowatts

1000 watts = 1 kilowatts

2,500 watts = 2.5 kilowatts

  • Number of hours Val runs AC per day = 7 hours
  • Number of days = 30 days
  • Cost of electricity = $0.18 kilowatts per hour

Cost of Val’s AC to run for a summer month of 30 days = Quantity of electricity used × Number of hours Val runs AC per day × Number of days × Cost of electricity

= 2.5 × 7 × 30 × 0.18

= $94.5

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