Lesson 4
Checking an Energy Bill
Rebuild an energy charge from units, rates and days, and tell a change in price, usage or payment apart.
Builds on
Predict
The Okafors’ energy supplier writes to say their monthly Direct Debit is rising from £80 to £100, “based on your estimated annual usage of 3,100 kWh”. Last year’s letter gave the same 3,100 kWh.
What explains the rise?
Choose a prediction, then select Next to see the answer.