3 Gareth is changing his gas supplier to GES Energy. He has this information. GES Energy annual fee £231.65 plus 4.71 pence for each kWh used get 5% off the total charge if you pay by direct debit Last year Gareth used 42000 kWh of gas. Gareth thinks he will use the same amount of gas this year. He will pay by direct debit. Work out the total gas bill Gareth will pay using GES Energy.​