Numerical Test Question 77 – Tiered electricity charge
Scenario
An office used 38,600 kWh of electricity in one month. The supplier charges different rates for the first 25,000 kWh and for any additional use. A monthly standing charge is then added.
| Rates and conditions |
|---|
| First 25,000 kWh: £0.18 per kWh |
| Additional electricity: £0.15 per kWh |
| Monthly standing charge: £420 |
Question
What is the total electricity charge for the month?
- A. £6,760
- B. £6,960
- C. £6,540
- D. £7,380
Click to reveal the answer
Correct answer: B. £6,960
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