Question 111 • ****Spring 2026 Financial Math - MA2007 MQS21QXV
For the standard use plan, the first 400 kWh cost 400 × $0.075 = $30, and the remaining 875 kWh cost 875 × $0.10 = $87.50, for a total of $117.50. For the interval plan, the off-peak amount is 1,275 − 575 = 700 kWh. Its cost is 575 × $0.15 + 700 × $0.03 = $86.25 + $21 = $107.25. Choice A gives both monthly costs correctly.
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