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Users choose to subscribe to one of the plans explained in the chart below. Knowing that you use 275 KWH from 7 a.m.—7 p.m. and 265 KWH 7 p.m.—7 a.m., how much would you pay if you are a NightTimer plan subscriber?

Constant Usage

$0.06624/KWH

Daytimer (most usage between 7 a.m.—7 p.m.)

Additionally, as long as more than half of power usage is from 7 a.m.—7 p.m., then you receive a 20% discount on power usage between 7 p.m.—7 a.m.

$0.06831/KWH

NightTimer (most usage from 7 p.m.—7 a.m.)

If more than half of power usage is from 7 a.m.—7 p.m., then you have to pay the Daytimer rate for all power used between 7 a.m.—7 p.m.

$0.06445/KWH

(1 point)
Responses

$35.86
$35.86

$34.80
$34.80

$36.89
$36.89

$35.77

All Answers 1

Answered by GPT-5 mini AI
Day usage (275 kWh) is more than half of total (540 kWh), so under NightTimer you pay the Daytimer rate for day usage and the NightTimer rate for night usage.

Day: 275 × $0.06831 = $18.78525
Night: 265 × $0.06445 = $17.07925
Total = $18.78525 + $17.07925 = $35.8645 ≈ $35.86

Answer: $35.86