Posted by Veronica on Saturday, February 24, 2007 at 7:11am.
The electricity meter on Donna's house
read 71,236.4 kwh at the beginning of
March and 73,196.2 kwh at the end of
March. She pays 7.4 per kwh. What is
the amount of her electricity bill for
March? Round to the nearest cent.
I came up with $145.03 Would you
please check to make sure I am correct?
(73 196.2 - 71 236.4)/7.4 =264.84 to the nearest cent
I added 71,236.4 + 73,196.2 divided by
The possible solutions are:
One of these solutions is correct.
Please help, because I am wrong also.
Jake's process is not quite correct, and there's something wrong with his arithmetic!
73196.2 - 71236.4 = 1959.8
Multiply that by .074
, and you get your answer. B is correct.
You subtract to get the number of kwh used during the month. Then you multiply the number of kwh used by the number of cents, but you must use the $.074 to multiply by, not 7.4¢.
Congratulations, Veronica! You got it right the first time!
Answer this Question
Math - I need help with this problem. The electricity meter on Donna's house ...
Math - The amount of a monthly electric bill (B, measured in $) depends on the ...
phyical science - A microwave oven has a power requirement of 1235 W. A frozen ...
math - In a normal month you use 1200 kWh of electricity. Your electricity ...
GCSE Physics - The energy value of gas used in a home is measured in KWH. The ...
consumer math - If you used 648 KWH and the power company charges 0.05954/KWH ...
physics - How many kWh of energy would be needed for brushing your teeth with an...
Chemistry - How many watts are in a kWh? Or how do you convert 30 kWh into ...
science - A microwave oven has a power requirement of 1248 W. A frozen dinner ...
science - A microwave oven has a power requirement of 1235 W. A frozen dinner ...