Problema Solution
The Chans' electric bill for September was $40.70, which included a tax of $1.98. If the Chans used 320 kilowatts per hour of electricity that month, find the cost per kilowatt hour.
Answer provided by our tutors
let x = the cost per kilowatt hour
320x + 1.98 = 40.70
by solving we find:
x = $0.121
click here to see the step by step solution of the equation:
the cost per kilowatt hour is $0.121 or 12.1 cents.