susans monthly energy usage is shown in the table. if it costs $0.20 per kwh, what will susans monthly bill…

susans monthly energy usage is shown in the table. if it costs $0.20 per kwh, what will susans monthly bill cost? round your answer to the nearest cent. appliance wattage total hours per month fan 50 w 168 hair dryer 1000 w 14 stove 3000 w 42 toaster 1200 w 5 radio 10 w 84

susans monthly energy usage is shown in the table. if it costs $0.20 per kwh, what will susans monthly bill cost? round your answer to the nearest cent. appliance wattage total hours per month fan 50 w 168 hair dryer 1000 w 14 stove 3000 w 42 toaster 1200 w 5 radio 10 w 84

Answer

Explanation:

Step1: Convert watt - hours to kilowatt - hours for each appliance

For fan: $50\times168 = 8400$ watt - hours, $8400\div1000=8.4$ kWh. For hair dryer: $1000\times14 = 14000$ watt - hours, $14000\div1000 = 14$ kWh. For stove: $3000\times42=126000$ watt - hours, $126000\div1000 = 126$ kWh. For toaster: $1200\times5 = 6000$ watt - hours, $6000\div1000=6$ kWh. For radio: $10\times84 = 840$ watt - hours, $840\div1000 = 0.84$ kWh.

Step2: Calculate total kWh

$8.4 + 14+126+6+0.84=155.24$ kWh.

Step3: Calculate the monthly bill

$155.24\times0.20 = 31.048\approx31.05$ dollars.

Answer:

$31.05$