87
RCMultiple Choice

Topic Test — Cumulative exam

Question 87 • ****Spring 2026 Financial Math - MA2007 MQS21QXV

Shanika and Vanesa are comparing their electric bills for the past month. Shanika is on a standard use plan and Vanesa is on an interval use plan. Each person’s usage is listed on the chart below:Standard Use PlanInterval Use Plan7.5 cents/kWh for the first 400 kWh10 cents/kWh for the next 400 kWh12.5 cents/kWh for anything over 800 kWhOn-peak hours - 15 cents/kWhOff-peak hours - 3 cents/kWhBoth women use 1,325 kWh for the given 30 day period. Vanesa uses 500 kWh during on-peak hours and 825 during off-peak hours. Which person ends up paying more for their utilities? How much more?

Answer
A
Vanesa pays $35.88 more than Shanika.
B
Vanesa pays $99.75 more than Shanika.
C
Shanika pays $35.88 more than Vanesa.
D
Shanika pays $99.75 more than Vanesa.

Explanation

Shanika’s standard-plan bill is $30 for the first 400 kWh, $40 for the next 400 kWh, and $65.625 for the remaining 525 kWh, totaling $135.625. Vanesa pays $75 for 500 on-peak kWh and $24.75 for 825 off-peak kWh, totaling $99.75. The difference is $135.625 − $99.75 = $35.875, which rounds to $35.88, so Shanika pays $35.88 more than Vanesa.

AI-written and checked against the verified answer.

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